855 = 32 x 56 x 19.
855 is the sum of all the digits of all two-digit numbers.
855 is a number that cannot be written as a sum of three squares.
855 is a decagonal number. It is also a centered cube number.
855 is the smallest number that is the sum of five consecutive squares and two consecutive cubes: 855 = 112 + 122 + 132 + 142 + 152 = 73 + 83.
855 Newcombia is a asteroid discovered in 1916.
Source: Number Gossip
