172974153 has 16 divisors (see below), whose sum is σ = 251870976. Its totient is φ = 104719440.

The previous prime is 172974097. The next prime is 172974161. The reversal of 172974153 is 351479271.

It is a de Polignac number, because none of the positive numbers 2^k-172974153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172974163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36126 + ... + 40632.

It is an arithmetic number, because the mean of its divisors is an integer number (15741936).

Almost surely, 2^172974153 is an apocalyptic number.

It is an amenable number.

172974153 is a deficient number, since it is larger than the sum of its proper divisors (78896823).

172974153 is a wasteful number, since it uses less digits than its factorization.

172974153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684.

The product of its digits is 52920, while the sum is 39.

The square root of 172974153 is about 13151.9638457532. The cubic root of 172974153 is about 557.1777144811.

The spelling of 172974153 in words is "one hundred seventy-two million, nine hundred seventy-four thousand, one hundred fifty-three".