56977491 has 8 divisors (see below), whose sum is σ = 77403600. Its totient is φ = 37268192.

The previous prime is 56977483. The next prime is 56977493. The reversal of 56977491 is 19477965.

56977491 = 79² + 80² + ... + 555².

It is a happy number.

56977491 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 56977491 - 2³ = 56977483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56977491.

It is not an unprimeable number, because it can be changed into a prime (56977493) 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, 179016 + ... + 179333.

It is an arithmetic number, because the mean of its divisors is an integer number (9675450).

Almost surely, 2^56977491 is an apocalyptic number.

56977491 is a deficient number, since it is larger than the sum of its proper divisors (20426109).

56977491 is a wasteful number, since it uses less digits than its factorization.

56977491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358405.

The product of its digits is 476280, while the sum is 48.

The square root of 56977491 is about 7548.3435931335. The cubic root of 56977491 is about 384.7994480299.

The spelling of 56977491 in words is "fifty-six million, nine hundred seventy-seven thousand, four hundred ninety-one".