56902731 has 8 divisors (see below), whose sum is σ = 76468224. Its totient is φ = 37636200.

The previous prime is 56902721. The next prime is 56902733. The reversal of 56902731 is 13720965.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56902731 - 2⁷ = 56902603 is a prime.

It is a super-2 number, since 2×56902731² = 6475841590516722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56902692 and 56902701.

It is not an unprimeable number, because it can be changed into a prime (56902733) 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 7 ways as a sum of consecutive naturals, for example, 74295 + ... + 75056.

It is an arithmetic number, because the mean of its divisors is an integer number (9558528).

Almost surely, 2^56902731 is an apocalyptic number.

56902731 is a deficient number, since it is larger than the sum of its proper divisors (19565493).

56902731 is a wasteful number, since it uses less digits than its factorization.

56902731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149481.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 56902731 is about 7543.3898878422. The cubic root of 56902731 is about 384.6310762901.

The spelling of 56902731 in words is "fifty-six million, nine hundred two thousand, seven hundred thirty-one".