56047977 has 24 divisors (see below), whose sum is σ = 84744800. Its totient is φ = 36610704.

The previous prime is 56047973. The next prime is 56047993. The reversal of 56047977 is 77974065.

It is not a de Polignac number, because 56047977 - 2² = 56047973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56047973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75474 + ... + 76212.

Almost surely, 2^56047977 is an apocalyptic number.

It is an amenable number.

56047977 is a deficient number, since it is larger than the sum of its proper divisors (28696823).

56047977 is an equidigital number, since it uses as much as digits as its factorization.

56047977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 56047977 is about 7486.5196854079. The cubic root of 56047977 is about 382.6954633431.

The spelling of 56047977 in words is "fifty-six million, forty-seven thousand, nine hundred seventy-seven".