9975172 has 12 divisors (see below), whose sum is σ = 17678080. Its totient is φ = 4924296.

The previous prime is 9975157. The next prime is 9975181. The reversal of 9975172 is 2715799.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15468 + ... + 16099.

Almost surely, 2^9975172 is an apocalyptic number.

It is an amenable number.

9975172 is a deficient number, since it is larger than the sum of its proper divisors (7702908).

9975172 is a wasteful number, since it uses less digits than its factorization.

9975172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31650 (or 31648 counting only the distinct ones).

The product of its digits is 39690, while the sum is 40.

The square root of 9975172 is about 3158.3495689996. The cubic root of 9975172 is about 215.2650202224.

The spelling of 9975172 in words is "nine million, nine hundred seventy-five thousand, one hundred seventy-two".