172056115 has 64 divisors (see below), whose sum is σ = 277770240. Its totient is φ = 99066240.

The previous prime is 172056097. The next prime is 172056119. The reversal of 172056115 is 511650271.

It is not a de Polignac number, because 172056115 - 2¹¹ = 172054067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172056119) 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 63 ways as a sum of consecutive naturals, for example, 314272 + ... + 314818.

It is an arithmetic number, because the mean of its divisors is an integer number (4340160).

Almost surely, 2^172056115 is an apocalyptic number.

172056115 is a deficient number, since it is larger than the sum of its proper divisors (105714125).

172056115 is a wasteful number, since it uses less digits than its factorization.

172056115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 172056115 is about 13117.0162384591. The cubic root of 172056115 is about 556.1902491894.

The spelling of 172056115 in words is "one hundred seventy-two million, fifty-six thousand, one hundred fifteen".