50 (number)

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495051
Cardinalfifty
Ordinal50th
(fiftieth)
Factorization2 · 52
Divisors1, 2, 5, 10, 25, 50
Roman numeralL
Unicode symbol(s)
Binary1100102
Ternary12123
Quaternary3024
Quinary2005
Senary1226
Octal628
Duodecimal4212
Hexadecimal3216
Vigesimal2A20
Base 361E36
 
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This article is about the number. For the year 50 AD, see 50. For other uses of 50, see 50 (disambiguation).
495051
Cardinalfifty
Ordinal50th
(fiftieth)
Factorization2 · 52
Divisors1, 2, 5, 10, 25, 50
Roman numeralL
Unicode symbol(s)
Binary1100102
Ternary12123
Quaternary3024
Quinary2005
Senary1226
Octal628
Duodecimal4212
Hexadecimal3216
Vigesimal2A20
Base 361E36

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

In mathematics[edit]

Fifty is the smallest number that is the sum of two non-zero square numbers in two distinct ways: 50 = 12 + 72 = 52 + 52.[1] 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[edit]

In religion[edit]

In sports[edit]

In other fields[edit]

Fifty is:

References[edit]

  1. ^ de Koninck, J.M. (2009). Those fascinating numbers. AMS Bookstore. p. 18. ISBN 0-8218-4807-0.
  2. ^ Leviticus 25:10