56577523 has 4 divisors (see below), whose sum is σ = 56890288. Its totient is φ = 56264760.

The previous prime is 56577503. The next prime is 56577529. The reversal of 56577523 is 32577565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32577565 = 5 ⋅6515513.

It is a cyclic number.

It is not a de Polignac number, because 56577523 - 2¹⁷ = 56446451 is a prime.

It is a super-2 number, since 2×56577523² = 6402032217631058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56577529) 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, 156111 + ... + 156472.

It is an arithmetic number, because the mean of its divisors is an integer number (14222572).

Almost surely, 2^56577523 is an apocalyptic number.

56577523 is a deficient number, since it is larger than the sum of its proper divisors (312765).

56577523 is a wasteful number, since it uses less digits than its factorization.

56577523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312764.

The product of its digits is 220500, while the sum is 40.

The square root of 56577523 is about 7521.8031747713. The cubic root of 56577523 is about 383.8969336927.

The spelling of 56577523 in words is "fifty-six million, five hundred seventy-seven thousand, five hundred twenty-three".