56311977 has 8 divisors (see below), whose sum is σ = 75580480. Its totient is φ = 37292400.

The previous prime is 56311961. The next prime is 56311979. The reversal of 56311977 is 77911365.

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

It is not a de Polignac number, because 56311977 - 2⁴ = 56311961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56311979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61702 + ... + 62607.

It is an arithmetic number, because the mean of its divisors is an integer number (9447560).

Almost surely, 2^56311977 is an apocalyptic number.

It is an amenable number.

56311977 is a deficient number, since it is larger than the sum of its proper divisors (19268503).

56311977 is a wasteful number, since it uses less digits than its factorization.

56311977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124463.

The product of its digits is 39690, while the sum is 39.

The square root of 56311977 is about 7504.1306625085. The cubic root of 56311977 is about 383.2953862037.

The spelling of 56311977 in words is "fifty-six million, three hundred eleven thousand, nine hundred seventy-seven".