56902313 has 4 divisors (see below), whose sum is σ = 61279428. Its totient is φ = 52525200.

The previous prime is 56902309. The next prime is 56902319. The reversal of 56902313 is 31320965.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32171584 + 24730729 = 5672^2 + 4973^2 .

It is not a de Polignac number, because 56902313 - 2² = 56902309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56902319) 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, 2188538 + ... + 2188563.

It is an arithmetic number, because the mean of its divisors is an integer number (15319857).

Almost surely, 2^56902313 is an apocalyptic number.

It is an amenable number.

56902313 is a deficient number, since it is larger than the sum of its proper divisors (4377115).

56902313 is a wasteful number, since it uses less digits than its factorization.

56902313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377114.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 56902313 is about 7543.3621814149. The cubic root of 56902313 is about 384.6301344713.

The spelling of 56902313 in words is "fifty-six million, nine hundred two thousand, three hundred thirteen".