172163117 has 12 divisors (see below), whose sum is σ = 200849760. Its totient is φ = 147142296.

The previous prime is 172163087. The next prime is 172163137. The reversal of 172163117 is 711361271.

It is not a de Polignac number, because 172163117 - 2²² = 167968813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172163117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172163137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12698 + ... + 22484.

It is an arithmetic number, because the mean of its divisors is an integer number (16737480).

Almost surely, 2^172163117 is an apocalyptic number.

It is an amenable number.

172163117 is a deficient number, since it is larger than the sum of its proper divisors (28686643).

172163117 is an equidigital number, since it uses as much as digits as its factorization.

172163117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10160 (or 10153 counting only the distinct ones).

The product of its digits is 1764, while the sum is 29.

The square root of 172163117 is about 13121.0943522254. The cubic root of 172163117 is about 556.3055238604.

The spelling of 172163117 in words is "one hundred seventy-two million, one hundred sixty-three thousand, one hundred seventeen".