56291577 has 4 divisors (see below), whose sum is σ = 75055440. Its totient is φ = 37527716.

The previous prime is 56291551. The next prime is 56291611. The reversal of 56291577 is 77519265.

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 56291577 - 2⁷ = 56291449 is a prime.

It is a super-2 number, since 2×56291577² = 6337483282293858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56291527) 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, 9381927 + ... + 9381932.

It is an arithmetic number, because the mean of its divisors is an integer number (18763860).

Almost surely, 2^56291577 is an apocalyptic number.

It is an amenable number.

56291577 is a deficient number, since it is larger than the sum of its proper divisors (18763863).

56291577 is a wasteful number, since it uses less digits than its factorization.

56291577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18763862.

The product of its digits is 132300, while the sum is 42.

The square root of 56291577 is about 7502.7712879975. The cubic root of 56291577 is about 383.2490954577.

The spelling of 56291577 in words is "fifty-six million, two hundred ninety-one thousand, five hundred seventy-seven".