56877993 has 12 divisors (see below), whose sum is σ = 82358640. Its totient is φ = 37825656.

The previous prime is 56877967. The next prime is 56878007. The reversal of 56877993 is 39977865.

56877993 is a `hidden beast` number, since 568 + 7 + 79 + 9 + 3 = 666.

It is not a de Polignac number, because 56877993 - 2⁶ = 56877929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56877913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3771 + ... + 11312.

It is an arithmetic number, because the mean of its divisors is an integer number (6863220).

Almost surely, 2^56877993 is an apocalyptic number.

It is an amenable number.

56877993 is a deficient number, since it is larger than the sum of its proper divisors (25480647).

56877993 is a wasteful number, since it uses less digits than its factorization.

56877993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15508 (or 15505 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 56877993 is about 7541.7499958564. The cubic root of 56877993 is about 384.5753297990.

The spelling of 56877993 in words is "fifty-six million, eight hundred seventy-seven thousand, nine hundred ninety-three".