56015057 has 4 divisors (see below), whose sum is σ = 64017216. Its totient is φ = 48012900.

The previous prime is 56015041. The next prime is 56015081. The reversal of 56015057 is 75051065.

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: 75051065 = 5 ⋅15010213.

It is a cyclic number.

It is not a de Polignac number, because 56015057 - 2⁴ = 56015041 is a prime.

It is a super-2 number, since 2×56015057² = 6275373221426498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56015257) 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, 4001069 + ... + 4001082.

It is an arithmetic number, because the mean of its divisors is an integer number (16004304).

Almost surely, 2^56015057 is an apocalyptic number.

It is an amenable number.

56015057 is a deficient number, since it is larger than the sum of its proper divisors (8002159).

56015057 is an equidigital number, since it uses as much as digits as its factorization.

56015057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8002158.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 56015057 is about 7484.3207440622. The cubic root of 56015057 is about 382.6205227732.

The spelling of 56015057 in words is "fifty-six million, fifteen thousand, fifty-seven".