56561908 has 12 divisors (see below), whose sum is σ = 106597540. Its totient is φ = 26105472.

The previous prime is 56561891. The next prime is 56561909. The reversal of 56561908 is 80916565.

It can be written as a sum of positive squares in 2 ways, for example, as 10837264 + 45724644 = 3292^2 + 6762^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56561909) 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, 543813 + ... + 543916.

Almost surely, 2^56561908 is an apocalyptic number.

It is an amenable number.

56561908 is a deficient number, since it is larger than the sum of its proper divisors (50035632).

56561908 is a wasteful number, since it uses less digits than its factorization.

56561908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087746 (or 1087744 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 56561908 is about 7520.7651206510. The cubic root of 56561908 is about 383.8616128216.

The spelling of 56561908 in words is "fifty-six million, five hundred sixty-one thousand, nine hundred eight".