56559967 has 4 divisors (see below), whose sum is σ = 59019120. Its totient is φ = 54100816.

The previous prime is 56559931. The next prime is 56559973. The reversal of 56559967 is 76995565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56559967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56559907) 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, 1229542 + ... + 1229587.

It is an arithmetic number, because the mean of its divisors is an integer number (14754780).

Almost surely, 2^56559967 is an apocalyptic number.

56559967 is a deficient number, since it is larger than the sum of its proper divisors (2459153).

56559967 is a wasteful number, since it uses less digits than its factorization.

56559967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459152.

The product of its digits is 2551500, while the sum is 52.

The square root of 56559967 is about 7520.6360768222. The cubic root of 56559967 is about 383.8572218576.

The spelling of 56559967 in words is "fifty-six million, five hundred fifty-nine thousand, nine hundred sixty-seven".