172375317 has 16 divisors (see below), whose sum is σ = 266474880. Its totient is φ = 109920096.

The previous prime is 172375309. The next prime is 172375319. The reversal of 172375317 is 713573271.

It is not a de Polignac number, because 172375317 - 2³ = 172375309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172375319) 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 15 ways as a sum of consecutive naturals, for example, 138168 + ... + 139409.

It is an arithmetic number, because the mean of its divisors is an integer number (16654680).

Almost surely, 2^172375317 is an apocalyptic number.

It is an amenable number.

172375317 is a deficient number, since it is larger than the sum of its proper divisors (94099563).

172375317 is a wasteful number, since it uses less digits than its factorization.

172375317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277609 (or 277603 counting only the distinct ones).

The product of its digits is 30870, while the sum is 36.

The square root of 172375317 is about 13129.1780778539. The cubic root of 172375317 is about 556.5339885228.

The spelling of 172375317 in words is "one hundred seventy-two million, three hundred seventy-five thousand, three hundred seventeen".