56172039 has 32 divisors (see below), whose sum is σ = 93857280. Its totient is φ = 29030400.

The previous prime is 56172023. The next prime is 56172079. The reversal of 56172039 is 93027165.

56172039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56172039 - 2⁴ = 56172023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56172019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55167 + ... + 56175.

It is an arithmetic number, because the mean of its divisors is an integer number (2933040).

Almost surely, 2^56172039 is an apocalyptic number.

56172039 is a deficient number, since it is larger than the sum of its proper divisors (37685241).

56172039 is a wasteful number, since it uses less digits than its factorization.

56172039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 56172039 is about 7494.8007978865. The cubic root of 56172039 is about 382.9776202818.

The spelling of 56172039 in words is "fifty-six million, one hundred seventy-two thousand, thirty-nine".