255567156 has 24 divisors (see below), whose sum is σ = 642194784. Its totient is φ = 78636000.

The previous prime is 255567107. The next prime is 255567167. The reversal of 255567156 is 651765552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818970 + ... + 819281.

It is an arithmetic number, because the mean of its divisors is an integer number (26758116).

Almost surely, 2^255567156 is an apocalyptic number.

255567156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

255567156 is an abundant number, since it is smaller than the sum of its proper divisors (386627628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255567156 is a wasteful number, since it uses less digits than its factorization.

255567156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638271 (or 1638269 counting only the distinct ones).

The product of its digits is 315000, while the sum is 42.

The square root of 255567156 is about 15986.4679025731. The cubic root of 255567156 is about 634.6023558746.

The spelling of 255567156 in words is "two hundred fifty-five million, five hundred sixty-seven thousand, one hundred fifty-six".