56577137 has 4 divisors (see below), whose sum is σ = 56924400. Its totient is φ = 56229876.

The previous prime is 56577097. The next prime is 56577223. The reversal of 56577137 is 73177565.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73177565 = 5 ⋅14635513.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56577137 is a prime.

It is a super-2 number, since 2×56577137² = 6401944862233538, 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 = 56577094 and 56577103.

It is not an unprimeable number, because it can be changed into a prime (56573137) 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, 173387 + ... + 173712.

It is an arithmetic number, because the mean of its divisors is an integer number (14231100).

Almost surely, 2^56577137 is an apocalyptic number.

It is an amenable number.

56577137 is a deficient number, since it is larger than the sum of its proper divisors (347263).

56577137 is a wasteful number, since it uses less digits than its factorization.

56577137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347262.

The product of its digits is 154350, while the sum is 41.

The square root of 56577137 is about 7521.7775159865. Note that the first 3 decimals coincide. The cubic root of 56577137 is about 383.8960606455.

The spelling of 56577137 in words is "fifty-six million, five hundred seventy-seven thousand, one hundred thirty-seven".