172112152 has 8 divisors (see below), whose sum is σ = 322710300. Its totient is φ = 86056072.

The previous prime is 172112107. The next prime is 172112159. The reversal of 172112152 is 251211271.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×172112152² = 59245185732142208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172112159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10757002 + ... + 10757017.

Almost surely, 2^172112152 is an apocalyptic number.

It is an amenable number.

172112152 is a deficient number, since it is larger than the sum of its proper divisors (150598148).

172112152 is a wasteful number, since it uses less digits than its factorization.

172112152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21514025 (or 21514021 counting only the distinct ones).

The product of its digits is 280, while the sum is 22.

The square root of 172112152 is about 13119.1521067484. The cubic root of 172112152 is about 556.2506245501.

The spelling of 172112152 in words is "one hundred seventy-two million, one hundred twelve thousand, one hundred fifty-two".