56605872 has 20 divisors (see below), whose sum is σ = 146231960. Its totient is φ = 18868608.

The previous prime is 56605867. The next prime is 56605873. The reversal of 56605872 is 27850665.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 56605872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56605873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589597 + ... + 589692.

It is an arithmetic number, because the mean of its divisors is an integer number (7311598).

Almost surely, 2^56605872 is an apocalyptic number.

It is an amenable number.

56605872 is an abundant number, since it is smaller than the sum of its proper divisors (89626088).

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

56605872 is a wasteful number, since it uses less digits than its factorization.

56605872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179300 (or 1179294 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 56605872 is about 7523.6873938249. The cubic root of 56605872 is about 383.9610420547.

The spelling of 56605872 in words is "fifty-six million, six hundred five thousand, eight hundred seventy-two".