56477657 has 4 divisors (see below), whose sum is σ = 56494080. Its totient is φ = 56461236.

The previous prime is 56477609. The next prime is 56477669. The reversal of 56477657 is 75677465.

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 an emirpimes, since its reverse is a distinct semiprime: 75677465 = 5 ⋅15135493.

It is a cyclic number.

It is not a de Polignac number, because 56477657 - 2⁸ = 56477401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56477677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857 + ... + 10662.

It is an arithmetic number, because the mean of its divisors is an integer number (14123520).

Almost surely, 2^56477657 is an apocalyptic number.

It is an amenable number.

56477657 is a deficient number, since it is larger than the sum of its proper divisors (16423).

56477657 is a wasteful number, since it uses less digits than its factorization.

56477657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16422.

The product of its digits is 1234800, while the sum is 47.

The square root of 56477657 is about 7515.1618079719. The cubic root of 56477657 is about 383.6709262109.

The spelling of 56477657 in words is "fifty-six million, four hundred seventy-seven thousand, six hundred fifty-seven".