255605504 has 72 divisors (see below), whose sum is σ = 636158208. Its totient is φ = 99578880.

The previous prime is 255605501. The next prime is 255605543. The reversal of 255605504 is 405506552.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (255605501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13229 + ... + 26195.

Almost surely, 2^255605504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255605504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318079104).

255605504 is an abundant number, since it is smaller than the sum of its proper divisors (380552704).

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

255605504 is a wasteful number, since it uses less digits than its factorization.

255605504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13001 (or 12987 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 255605504 is about 15987.6672469751. The cubic root of 255605504 is about 634.6340951044.

The spelling of 255605504 in words is "two hundred fifty-five million, six hundred five thousand, five hundred four".