172159 has 16 divisors (see below), whose sum is σ = 211680. Its totient is φ = 138240.

The previous prime is 172157. The next prime is 172169. The reversal of 172159 is 951271.

It is a cyclic number.

It is not a de Polignac number, because 172159 - 2¹ = 172157 is a prime.

It is a Duffinian number.

Its product of digits (630) is a multiple of the sum of its prime divisors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4179 + ... + 4219.

It is an arithmetic number, because the mean of its divisors is an integer number (13230).

2¹⁷²¹⁵⁹ is an apocalyptic number.

172159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

172159 is a deficient number, since it is larger than the sum of its proper divisors (39521).

172159 is a wasteful number, since it uses less digits than its factorization.

172159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90.

The product of its digits is 630, while the sum is 25.

The square root of 172159 is about 414.9204743080. The cubic root of 172159 is about 55.6301089445.

The spelling of 172159 in words is "one hundred seventy-two thousand, one hundred fifty-nine".