172173875 has 16 divisors (see below), whose sum is σ = 227515392. Its totient is φ = 129635200.

The previous prime is 172173857. The next prime is 172173901. The reversal of 172173875 is 578371271.

It is not a de Polignac number, because 172173875 - 2⁶ = 172173811 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38387 + ... + 42636.

It is an arithmetic number, because the mean of its divisors is an integer number (14219712).

Almost surely, 2^172173875 is an apocalyptic number.

172173875 is a deficient number, since it is larger than the sum of its proper divisors (55341517).

172173875 is an equidigital number, since it uses as much as digits as its factorization.

172173875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81055 (or 81045 counting only the distinct ones).

The product of its digits is 82320, while the sum is 41.

The square root of 172173875 is about 13121.5042963831. The cubic root of 172173875 is about 556.3171109534.

The spelling of 172173875 in words is "one hundred seventy-two million, one hundred seventy-three thousand, eight hundred seventy-five".