56172873 has 16 divisors (see below), whose sum is σ = 79353920. Its totient is φ = 35246016.

The previous prime is 56172869. The next prime is 56172881. The reversal of 56172873 is 37827165.

It is not a de Polignac number, because 56172873 - 2² = 56172869 is a prime.

It is a super-2 number, since 2×56172873² = 6310783322148258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56172863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5811 + ... + 12087.

It is an arithmetic number, because the mean of its divisors is an integer number (4959620).

Almost surely, 2^56172873 is an apocalyptic number.

It is an amenable number.

56172873 is a deficient number, since it is larger than the sum of its proper divisors (23181047).

56172873 is a wasteful number, since it uses less digits than its factorization.

56172873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6456.

The product of its digits is 70560, while the sum is 39.

The square root of 56172873 is about 7494.8564362501. The cubic root of 56172873 is about 382.9795156598.

The spelling of 56172873 in words is "fifty-six million, one hundred seventy-two thousand, eight hundred seventy-three".