172590164 has 12 divisors (see below), whose sum is σ = 304804500. Its totient is φ = 85503168.

The previous prime is 172590161. The next prime is 172590179. The reversal of 172590164 is 461095271.

It can be written as a sum of positive squares in 2 ways, for example, as 138250564 + 34339600 = 11758^2 + 5860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172590161) 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, 197489 + ... + 198360.

It is an arithmetic number, because the mean of its divisors is an integer number (25400375).

Almost surely, 2^172590164 is an apocalyptic number.

It is an amenable number.

172590164 is a deficient number, since it is larger than the sum of its proper divisors (132214336).

172590164 is a wasteful number, since it uses less digits than its factorization.

172590164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395962 (or 395960 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 172590164 is about 13137.3575729673. The cubic root of 172590164 is about 556.7651121304.

The spelling of 172590164 in words is "one hundred seventy-two million, five hundred ninety thousand, one hundred sixty-four".