56115597 has 4 divisors (see below), whose sum is σ = 74820800. Its totient is φ = 37410396.

The previous prime is 56115583. The next prime is 56115599. The reversal of 56115597 is 79551165.

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 not a de Polignac number, because 56115597 - 2⁴ = 56115581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56115599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9352597 + ... + 9352602.

It is an arithmetic number, because the mean of its divisors is an integer number (18705200).

Almost surely, 2^56115597 is an apocalyptic number.

It is an amenable number.

56115597 is a deficient number, since it is larger than the sum of its proper divisors (18705203).

56115597 is a wasteful number, since it uses less digits than its factorization.

56115597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18705202.

The product of its digits is 47250, while the sum is 39.

The square root of 56115597 is about 7491.0344412504. The cubic root of 56115597 is about 382.8493045619.

The spelling of 56115597 in words is "fifty-six million, one hundred fifteen thousand, five hundred ninety-seven".