172107056 has 20 divisors (see below), whose sum is σ = 363772104. Its totient is φ = 78230400.

The previous prime is 172107041. The next prime is 172107079. The reversal of 172107056 is 650701271.

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, 488765 + ... + 489116.

Almost surely, 2^172107056 is an apocalyptic number.

172107056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172107056 is an abundant number, since it is smaller than the sum of its proper divisors (191665048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172107056 is a wasteful number, since it uses less digits than its factorization.

172107056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977900 (or 977894 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 172107056 is about 13118.9578854420. The cubic root of 172107056 is about 556.2451345617.

The spelling of 172107056 in words is "one hundred seventy-two million, one hundred seven thousand, fifty-six".