57255624 has 24 divisors (see below), whose sum is σ = 155067510. Its totient is φ = 19085184.

The previous prime is 57255619. The next prime is 57255647. The reversal of 57255624 is 42655275.

57255624 is a `hidden beast` number, since 5 + 7 + 25 + 5 + 624 = 666.

57255624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 51408900 + 5846724 = 7170^2 + 2418^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 397537 + ... + 397680.

Almost surely, 2^57255624 is an apocalyptic number.

It is an amenable number.

57255624 is an abundant number, since it is smaller than the sum of its proper divisors (97811886).

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

57255624 is a wasteful number, since it uses less digits than its factorization.

57255624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795229 (or 795222 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 57255624 is about 7566.7446104649. The cubic root of 57255624 is about 385.4245589125.

The spelling of 57255624 in words is "fifty-seven million, two hundred fifty-five thousand, six hundred twenty-four".