56977 has 4 divisors (see below), whose sum is σ = 57456. Its totient is φ = 56500.

The previous prime is 56963. The next prime is 56983. The reversal of 56977 is 77965.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56977 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 56977.

It is not an unprimeable number, because it can be changed into a prime (56957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102 + ... + 352.

It is an arithmetic number, because the mean of its divisors is an integer number (14364).

2⁵⁶⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

56977 is a deficient number, since it is larger than the sum of its proper divisors (479).

56977 is a wasteful number, since it uses less digits than its factorization.

56977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478.

The product of its digits is 13230, while the sum is 34.

The square root of 56977 is about 238.6985546668. The cubic root of 56977 is about 38.4798342698.

Adding to 56977 its product of digits (13230), we get a palindrome (70207).

It can be divided in two parts, 569 and 77, that added together give a palindrome (646).

The spelling of 56977 in words is "fifty-six thousand, nine hundred seventy-seven".