56557944 has 24 divisors (see below), whose sum is σ = 153177960. Its totient is φ = 18852624.

The previous prime is 56557939. The next prime is 56557951. The reversal of 56557944 is 44975565.

56557944 is a `hidden beast` number, since 5 + 6 + 557 + 94 + 4 = 666.

56557944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 56557944.

It is a congruent number.

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, 392692 + ... + 392835.

It is an arithmetic number, because the mean of its divisors is an integer number (6382415).

Almost surely, 2^56557944 is an apocalyptic number.

It is an amenable number.

56557944 is an abundant number, since it is smaller than the sum of its proper divisors (96620016).

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

56557944 is a wasteful number, since it uses less digits than its factorization.

56557944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785539 (or 785532 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 56557944 is about 7520.5015790172. The cubic root of 56557944 is about 383.8526452848.

The spelling of 56557944 in words is "fifty-six million, five hundred fifty-seven thousand, nine hundred forty-four".