56171877 has 4 divisors (see below), whose sum is σ = 74895840. Its totient is φ = 37447916.

The previous prime is 56171867. The next prime is 56171879. The reversal of 56171877 is 77817165.

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.

It is a cyclic number.

It is not a de Polignac number, because 56171877 - 2⁴ = 56171861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56171879) 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, 9361977 + ... + 9361982.

It is an arithmetic number, because the mean of its divisors is an integer number (18723960).

Almost surely, 2^56171877 is an apocalyptic number.

It is an amenable number.

56171877 is a deficient number, since it is larger than the sum of its proper divisors (18723963).

56171877 is a wasteful number, since it uses less digits than its factorization.

56171877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18723962.

The product of its digits is 82320, while the sum is 42.

The square root of 56171877 is about 7494.7899903867. The cubic root of 56171877 is about 382.9772521126.

The spelling of 56171877 in words is "fifty-six million, one hundred seventy-one thousand, eight hundred seventy-seven".