56172877 has 8 divisors (see below), whose sum is σ = 59046336. Its totient is φ = 53335392.

The previous prime is 56172869. The next prime is 56172881. The reversal of 56172877 is 77827165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56172877 - 2³ = 56172869 is a prime.

It is a super-2 number, since 2×56172877² = 6310784220914258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56172827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5763 + ... + 12064.

It is an arithmetic number, because the mean of its divisors is an integer number (7380792).

Almost surely, 2^56172877 is an apocalyptic number.

It is an amenable number.

56172877 is a deficient number, since it is larger than the sum of its proper divisors (2873459).

56172877 is a wasteful number, since it uses less digits than its factorization.

56172877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17987.

The product of its digits is 164640, while the sum is 43.

The square root of 56172877 is about 7494.8567030998. The cubic root of 56172877 is about 382.9795247503.

The spelling of 56172877 in words is "fifty-six million, one hundred seventy-two thousand, eight hundred seventy-seven".