56331577 has 4 divisors (see below), whose sum is σ = 58780800. Its totient is φ = 53882356.

The previous prime is 56331553. The next prime is 56331593. The reversal of 56331577 is 77513365.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56331577 - 2⁷ = 56331449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56331547) 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, 1224577 + ... + 1224622.

It is an arithmetic number, because the mean of its divisors is an integer number (14695200).

Almost surely, 2^56331577 is an apocalyptic number.

It is an amenable number.

56331577 is a deficient number, since it is larger than the sum of its proper divisors (2449223).

56331577 is a wasteful number, since it uses less digits than its factorization.

56331577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449222.

The product of its digits is 66150, while the sum is 37.

The square root of 56331577 is about 7505.4364963005. The cubic root of 56331577 is about 383.3398510969.

The spelling of 56331577 in words is "fifty-six million, three hundred thirty-one thousand, five hundred seventy-seven".