51 may refer to:
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51 (number)
51 (fifty-one) is the natural number following 50 and preceding 52.
In mathematics
Fifty-one is
* a pentagonal number as well as a centered pentagonal number and an 18-gonal number
*the 6th Motzkin number, telling the number of ways to dra ...
* The year
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51 BC
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Year 51 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Marcellus and Sulpicius (or, less frequently, year 703 ''Ab urbe condita''). The denomination 51 BC for this year has be ...
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AD 51
AD 51 (Roman numerals, LI) was a common year starting on Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Claudius, Caesar and Servius Cornelius Scipio Salvidienus Orfitus (consul 51), Scipio (or, less fr ...
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1951
Events
January
* January 4 – Korean War: Third Battle of Seoul – Chinese and North Korean forces capture Seoul for the second time (having lost the Second Battle of Seoul in September 1950).
* January 9 – The Government of the Uni ...
**
2051
In contemporary history, the third millennium is the current millennium in the ''Anno Domini'' or Common Era, under the Gregorian calendar. It began on 1 January 2001 ( MMI) and will end on 31 December 3000 ( MMM), spanning the 21st to 30th ...
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''51'' (film), a 2011 American horror film directed by Jason Connery
* "
Fifty-One
"Fifty-One" is the fourth episode of the fifth season of the American television crime drama series ''Breaking Bad'', and the 50th overall episode of the series. Written by Sam Catlin and directed by Rian Johnson, it originally aired on AMC i ...
", an episode of the American television drama series ''Breaking Bad''
*
''51'' (album), a 2012 mixtape by rapper Kool A.D.
* "Fifty One", a song by Karma to Burn from the album ''
V'', 2011
*
51 Nemausa
51 Nemausa is a large main-belt asteroid that was discovered on January 22, 1858, by Joseph Jean Pierre Laurent. Laurent made the discovery from the private observatory of Benjamin Valz in Nîmes, France. The house, at 32 rue Nationale in Nîmes ...
, a main-belt asteroid
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