255555504 has 30 divisors (see below), whose sum is σ = 715200876. Its totient is φ = 85185120.

The previous prime is 255555473. The next prime is 255555533. The reversal of 255555504 is 405555552.

255555504 is a `hidden beast` number, since 2 + 55 + 55 + 550 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 887202 + ... + 887489.

Almost surely, 2^255555504 is an apocalyptic number.

255555504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

255555504 is an abundant number, since it is smaller than the sum of its proper divisors (459645372).

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

255555504 is a wasteful number, since it uses less digits than its factorization.

255555504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774705 (or 1774696 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 36.

The square root of 255555504 is about 15986.1034651975. The cubic root of 255555504 is about 634.5927113137.

The spelling of 255555504 in words is "two hundred fifty-five million, five hundred fifty-five thousand, five hundred four".