172704153 has 4 divisors (see below), whose sum is σ = 230272208. Its totient is φ = 115136100.

The previous prime is 172704149. The next prime is 172704199. The reversal of 172704153 is 351407271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 172704153 - 2² = 172704149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 172704153.

It is not an unprimeable number, because it can be changed into a prime (172704143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28784023 + ... + 28784028.

It is an arithmetic number, because the mean of its divisors is an integer number (57568052).

Almost surely, 2^172704153 is an apocalyptic number.

It is an amenable number.

172704153 is a deficient number, since it is larger than the sum of its proper divisors (57568055).

172704153 is an equidigital number, since it uses as much as digits as its factorization.

172704153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57568054.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 172704153 is about 13141.6952102839. The cubic root of 172704153 is about 556.8876589584.

The spelling of 172704153 in words is "one hundred seventy-two million, seven hundred four thousand, one hundred fifty-three".