56657111 has 4 divisors (see below), whose sum is σ = 64750992. Its totient is φ = 48563232.

The previous prime is 56657099. The next prime is 56657131. The reversal of 56657111 is 11175665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56657111 - 2²² = 52462807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56657131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4046930 + ... + 4046943.

It is an arithmetic number, because the mean of its divisors is an integer number (16187748).

Almost surely, 2^56657111 is an apocalyptic number.

56657111 is a deficient number, since it is larger than the sum of its proper divisors (8093881).

56657111 is an equidigital number, since it uses as much as digits as its factorization.

56657111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093880.

The product of its digits is 6300, while the sum is 32.

The square root of 56657111 is about 7527.0918022833. The cubic root of 56657111 is about 384.0768595247.

The spelling of 56657111 in words is "fifty-six million, six hundred fifty-seven thousand, one hundred eleven".