56313591 has 16 divisors (see below), whose sum is σ = 79301376. Its totient is φ = 35473856.

The previous prime is 56313557. The next prime is 56313601. The reversal of 56313591 is 19531365.

It is a cyclic number.

It is not a de Polignac number, because 56313591 - 2¹⁷ = 56182519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56313791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811 + ... + 10643.

It is an arithmetic number, because the mean of its divisors is an integer number (4956336).

Almost surely, 2^56313591 is an apocalyptic number.

56313591 is a deficient number, since it is larger than the sum of its proper divisors (22987785).

56313591 is a wasteful number, since it uses less digits than its factorization.

56313591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9942.

The product of its digits is 12150, while the sum is 33.

The square root of 56313591 is about 7504.2382025093. The cubic root of 56313591 is about 383.2990481414.

The spelling of 56313591 in words is "fifty-six million, three hundred thirteen thousand, five hundred ninety-one".