56389977 has 12 divisors (see below), whose sum is σ = 93088320. Its totient is φ = 32222808.

The previous prime is 56389973. The next prime is 56389979. The reversal of 56389977 is 77998365.

56389977 is a `hidden beast` number, since 563 + 8 + 9 + 9 + 77 = 666.

It is not a de Polignac number, because 56389977 - 2² = 56389973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56389973) 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, 447477 + ... + 447602.

It is an arithmetic number, because the mean of its divisors is an integer number (7757360).

Almost surely, 2^56389977 is an apocalyptic number.

It is an amenable number.

56389977 is a deficient number, since it is larger than the sum of its proper divisors (36698343).

56389977 is a wasteful number, since it uses less digits than its factorization.

56389977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895092 (or 895089 counting only the distinct ones).

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

The square root of 56389977 is about 7509.3260017128. The cubic root of 56389977 is about 383.4722772102.

The spelling of 56389977 in words is "fifty-six million, three hundred eighty-nine thousand, nine hundred seventy-seven".