56757731 has 8 divisors (see below), whose sum is σ = 60177600. Its totient is φ = 53381160.

The previous prime is 56757709. The next prime is 56757733. The reversal of 56757731 is 13775765.

56757731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 56757731 - 2¹⁸ = 56495587 is a prime.

It is a super-2 number, since 2×56757731² = 6442880056536722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56757733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8105 + ... + 13386.

It is an arithmetic number, because the mean of its divisors is an integer number (7522200).

Almost surely, 2^56757731 is an apocalyptic number.

56757731 is a deficient number, since it is larger than the sum of its proper divisors (3419869).

56757731 is a wasteful number, since it uses less digits than its factorization.

56757731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21649.

The product of its digits is 154350, while the sum is 41.

The square root of 56757731 is about 7533.7726936775. The cubic root of 56757731 is about 384.3040917164.

The spelling of 56757731 in words is "fifty-six million, seven hundred fifty-seven thousand, seven hundred thirty-one".