**50**= 2 x 5

^{2}.

**50**= 8 + 9 + 10 + 11 + 12.

**50**can be expressed as a sum of primes in two distinct ways such that all primes involved are consecutive:

**50**= 2 + 5 + 7 + 17 + 19 = 3 + 11 + 13 + 23.

**50**is the smallest number with two representations as a sum of two squares:

**50**= 1

^{2}+ 7

^{2}= 5

^{2}+ 5

^{2}.

**50**is 1212 in base 3, 101 in base 7, and 55 in base 9.

**50**stars representing its

**50**constituent states. If you count stars along the diagonals, you get the sum 1 + 3 + 5 + 7 + 9 + 9 + 7 + 5 + 3 + 1 =

**50**.

Source: Number Gossip