51 (number)

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51 (fifty-one) is the natural number 51 following 50 and preceding 52.

<< 50 51 52 53 54 55 56 57 58 59 >> List of numbers -- Integers 0 10 20 30 40 50 60 70 80 90 >>
Cardinal <td>51 fifty-one
Ordinal <td>51st fifty-first
Factorization <td><math>3\cdot 17</math>
Divisors	1, 3, 17, 51
Roman numeral	LI
Binary	110011
Hexadecimal	33

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1 In mathematics
2 In science
- 2.1 Astronomy
3 In sports
4 In other fields
5 Historical years

[edit] In mathematics

Fifty-one is a pentagonal number as well as a centered pentagonal number (one of the few numbers to be both) and an 18-gonal number and a Perrin number. It is also the 6th Motzkin number, telling the number of ways to draw non-intersecting chords between any six points on a circle's boundary, no matter where the points may be located on the boundary.

[edit] In science

The atomic number of antimony.

[edit] Astronomy

Messier object M51, a magnitude 8.0 spiral galaxy in the constellation Canes Venatici, also known as the Whirlpool Galaxy
The New General Catalogue object NGC 51, a spiral galaxy in the constellation Andromeda
The Saros number of the solar eclipse series which began on -1407 September 2 and ended on 108 February 29. The duration of Saros series 51 was 1514.5 years, and it contained 85 solar eclipses. The Saros number of the lunar eclipse series which began on -1105 June 13 and ended on 211 August 12. The duration of Saros series 51 was 1316.2 years, and it contained 74 lunar eclipses.

[edit] In sports

The jersey number of American football Hall of Famer Dick Butkus, linebacker for the Chicago Bears who retired his jersey number in 1994
The jersey number of Michael Ruffin, NBA player for the Washington Wizards
The trademark car number of racing driver Greg Murphy
The jersey number of Bernie Williams, MLB player for the New York Yankees
Former jersey number of Randy Johnson, MLB pitcher while he was with the Seattle Mariners and Arizona Diamondbacks. When he was acquired by the Yankees, he began to use the number 41, since 51 was already taken by Bernie Williams
St. Louis Cardinal WIllie McGee wore #51

[edit] In other fields

Image:Area 51 28 August 1968 3.jpg Fifty-one is:

The code for international direct dial phone calls to Peru
The model number of the P-51 Mustang WWII fighter aircraft
Area 51, a parcel of U.S. military-controlled land in southern Nevada, apparently containing a secret aircraft testing facility
Part of the title of a collection of stories by Lord Dunsany, Fifty-One Tales
The number of the fire station and rescue engine in the TV series Emergency!
The number of Rowdy Burns's car (Michael Rooker), later Cole Trickle's (Tom Cruise) number in the film Days of Thunder
Washington D.C. and Puerto Rico often mentioned as the future "51st State"
Owning 51% of stocks makes one a major shareholder
Samuel L. Jackson starred in "Formula 51” "a.k.a. “51st State"
"Paul is Live" album (1993): Paul McCartney's cover shot in front of London's Abbey Road Studios. A parody of the original Abbey Road. Paul, then 51, is wearing shoes, and the Volkswagen bears a license plate that reads "51 IS" (instead of "28 IF" as on Abbey Road).
"51st anniversary" song by Jimi Hendrix
"Come in Number 51, Your Time is Up" song by Pink Floyd
Bob Dylan: Highway 51 Blues and the name of a band
The Parker 51, introduced in 1941, may well be the most famous fountain pen ever made
A brand of pastis (anise liqueur) manufactured by Pernod Ricard
"Cachaça 51" is the brand name of a cachaça produced by a Companhia Müller de Bebidas in Pirassununga, São Paulo, Brasil.