56561924 has 36 divisors (see below), whose sum is σ = 106323924. Its totient is φ = 26320896.

The previous prime is 56561909. The next prime is 56561951. The reversal of 56561924 is 42916565.

It can be written as a sum of positive squares in 6 ways, for example, as 3534400 + 53027524 = 1880^2 + 7282^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130412 + ... + 130844.

Almost surely, 2^56561924 is an apocalyptic number.

It is an amenable number.

56561924 is a deficient number, since it is larger than the sum of its proper divisors (49762000).

56561924 is a wasteful number, since it uses less digits than its factorization.

56561924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 565 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 56561924 is about 7520.7661843724. The cubic root of 56561924 is about 383.8616490167.

The spelling of 56561924 in words is "fifty-six million, five hundred sixty-one thousand, nine hundred twenty-four".