15172056 has 32 divisors (see below), whose sum is σ = 42145200. Its totient is φ = 5057280.

The previous prime is 15172043. The next prime is 15172063. The reversal of 15172056 is 65027151.

15172056 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34905 + ... + 35336.

Almost surely, 2^15172056 is an apocalyptic number.

It is an amenable number.

15172056 is an abundant number, since it is smaller than the sum of its proper divisors (26973144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15172056 is a wasteful number, since it uses less digits than its factorization.

15172056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70256 (or 70246 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 15172056 is about 3895.1323469171. The cubic root of 15172056 is about 247.5605728694.

The spelling of 15172056 in words is "fifteen million, one hundred seventy-two thousand, fifty-six".