255515156 has 18 divisors (see below), whose sum is σ = 484194942. Its totient is φ = 117929760.

The previous prime is 255515147. The next prime is 255515191. The reversal of 255515156 is 651515552.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 15760900 + 239754256 = 3970^2 + 15484^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188315 + ... + 189666.

It is an arithmetic number, because the mean of its divisors is an integer number (26899719).

Almost surely, 2^255515156 is an apocalyptic number.

255515156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

255515156 is a deficient number, since it is larger than the sum of its proper divisors (228679786).

255515156 is a wasteful number, since it uses less digits than its factorization.

255515156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378011 (or 377996 counting only the distinct ones).

The product of its digits is 37500, while the sum is 35.

The square root of 255515156 is about 15984.8414443184. The cubic root of 255515156 is about 634.5593123143.

The spelling of 255515156 in words is "two hundred fifty-five million, five hundred fifteen thousand, one hundred fifty-six".