255587904 has 336 divisors, whose sum is σ = 898672320. Its totient is φ = 68382720.

The previous prime is 255587869. The next prime is 255587921. The reversal of 255587904 is 409785552.

255587904 is a `hidden beast` number, since 2 + 5 + 558 + 7 + 90 + 4 = 666.

It is a super-2 number, since 2×255587904² = 130650353342226432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255587904.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2388619 + ... + 2388725.

It is an arithmetic number, because the mean of its divisors is an integer number (2674620).

Almost surely, 2^255587904 is an apocalyptic number.

255587904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255587904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449336160).

255587904 is an abundant number, since it is smaller than the sum of its proper divisors (643084416).

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

255587904 is a wasteful number, since it uses less digits than its factorization.

255587904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The square root of 255587904 is about 15987.1168132343. The cubic root of 255587904 is about 634.6195286256.

The spelling of 255587904 in words is "two hundred fifty-five million, five hundred eighty-seven thousand, nine hundred four".