56577919 has 4 divisors (see below), whose sum is σ = 56746144. Its totient is φ = 56409696.

The previous prime is 56577823. The next prime is 56577931. The reversal of 56577919 is 91977565.

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 56577919 - 2⁷ = 56577791 is a prime.

It is a super-2 number, since 2×56577919² = 6402121836741122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56577019) 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, 83607 + ... + 84280.

It is an arithmetic number, because the mean of its divisors is an integer number (14186536).

Almost surely, 2^56577919 is an apocalyptic number.

56577919 is a deficient number, since it is larger than the sum of its proper divisors (168225).

56577919 is a wasteful number, since it uses less digits than its factorization.

56577919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168224.

The product of its digits is 595350, while the sum is 49.

The square root of 56577919 is about 7521.8294982006. The cubic root of 56577919 is about 383.8978293537.

The spelling of 56577919 in words is "fifty-six million, five hundred seventy-seven thousand, nine hundred nineteen".