56566331 has 4 divisors (see below), whose sum is σ = 57067032. Its totient is φ = 56065632.

The previous prime is 56566319. The next prime is 56566373. The reversal of 56566331 is 13366565.

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

It is a cyclic number.

It is not a de Polignac number, because 56566331 - 2²² = 52372027 is a prime.

It is a super-2 number, since 2×56566331² = 6399499605603122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56566291 and 56566300.

It is not an unprimeable number, because it can be changed into a prime (56566231) 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, 250181 + ... + 250406.

It is an arithmetic number, because the mean of its divisors is an integer number (14266758).

Almost surely, 2^56566331 is an apocalyptic number.

56566331 is a deficient number, since it is larger than the sum of its proper divisors (500701).

56566331 is a wasteful number, since it uses less digits than its factorization.

56566331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500700.

The product of its digits is 48600, while the sum is 35.

The square root of 56566331 is about 7521.0591674311. The cubic root of 56566331 is about 383.8716182341.

The spelling of 56566331 in words is "fifty-six million, five hundred sixty-six thousand, three hundred thirty-one".