172318252 has 12 divisors (see below), whose sum is σ = 305688376. Its totient is φ = 84978720.

The previous prime is 172318249. The next prime is 172318259. The reversal of 172318252 is 252813271.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (172318259) 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 3 ways as a sum of consecutive naturals, for example, 294774 + ... + 295357.

Almost surely, 2^172318252 is an apocalyptic number.

It is an amenable number.

172318252 is a deficient number, since it is larger than the sum of its proper divisors (133370124).

172318252 is a wasteful number, since it uses less digits than its factorization.

172318252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590208 (or 590206 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 172318252 is about 13127.0046849995. The cubic root of 172318252 is about 556.4725680561.

The spelling of 172318252 in words is "one hundred seventy-two million, three hundred eighteen thousand, two hundred fifty-two".