172945522 has 8 divisors (see below), whose sum is σ = 274678236. Its totient is φ = 81386112.

The previous prime is 172945501. The next prime is 172945547. The reversal of 172945522 is 225549271.

172945522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 135233641 + 37711881 = 11629^2 + 6141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2543283 + ... + 2543350.

Almost surely, 2^172945522 is an apocalyptic number.

172945522 is a deficient number, since it is larger than the sum of its proper divisors (101732714).

172945522 is a wasteful number, since it uses less digits than its factorization.

172945522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086652.

The product of its digits is 50400, while the sum is 37.

The square root of 172945522 is about 13150.8753320834. The cubic root of 172945522 is about 557.1469710914.

The spelling of 172945522 in words is "one hundred seventy-two million, nine hundred forty-five thousand, five hundred twenty-two".