AskDefine | Define fifty

Dictionary Definition

fifty adj : being ten more than forty [syn: 50, l]


1 the cardinal number that is the product of ten and five [syn: 50, L]
2 a United States bill worth 50 dollars [syn: fifty dollar bill]

User Contributed Dictionary



Old English fīftiġ


  • /ˈfɪfti/

Alternative spellings


  1. The cardinal number occurring after forty-nine and before fifty-one, represented in Roman numerals as L and in Arabic numerals as 50. Ordinal: fiftieth.
  2. A fifty-dollar bill.
    Do you want small bills or are fifties OK?


Extensive Definition

50 (fifty) is the integer following 49 and preceding 51.

In mathematics

Fifty is the smallest number that can be written as the sum of two squares in two distinct ways: 50 = 12 + 72 = 52 + 52. It is also the sum of three squares, 50 = 32 + 42 + 52. It is a Harshad number.
There is no solution to the equation φ(x) = 50, making 50 a nontotient. Nor is there a solution to the equation x - φ(x) = 50, making 50 a noncototient.
The aliquot sum of 50 is 43 and its aliquot sequence is (50,43,1,0). Fifty is itself the aliquot sum of 40 and 94.

In science


In religion

  • In Kabbalah, there are 50 Gates of Wisdom (or Understanding) and 50 Gates of Impurity
  • The traditional number of years in a jubilee period

In sports

In other fields

Fifty is:

Historical years

50 A.D., 50 B.C., 1950, 2050, etc.
fifty in Catalan: Cinquanta
fifty in Chuvash: 50 (хисеп)
fifty in Corsican: 50 (numeru)
fifty in Danish: 50 (tal)
fifty in Spanish: Cincuenta
fifty in Esperanto: Kvindek
fifty in Basque: Berrogeita hamar
fifty in French: 50 (nombre)
fifty in Gan Chinese: 50
fifty in Korean: 50
fifty in Interlingua (International Auxiliary Language Association): 50 (numero)
fifty in Icelandic: Fimmtíu
fifty in Italian: 50 (numero)
fifty in Hebrew: 50 (מספר)
fifty in Haitian: 50 (nonm)
fifty in Lithuanian: 50 (skaičius)
fifty in Lombard: Nümar 50
fifty in Hungarian: 50 (szám)
fifty in Malay (macrolanguage): 50 (nombor)
fifty in Dutch: 50 (getal)
fifty in Japanese: 50
fifty in Neapolitan: Cinquànta
fifty in Norwegian: 50 (tall)
fifty in Norwegian Nynorsk: Talet 50
fifty in Polish: 50 (liczba)
fifty in Portuguese: Cinqüenta
fifty in Russian: 50 (число)
fifty in Simple English: Fifty
fifty in Slovak: 50 (číslo)
fifty in Slovenian: 50 (število)
fifty in Swedish: 50 (tal)
fifty in Thai: 50
fifty in Vietnamese: 50 (số)
fifty in Wu Chinese: 50
fifty in Yiddish: 50 (נומער)
fifty in Contenese: 50
fifty in Chinese: 50
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