172059145 has 16 divisors (see below), whose sum is σ = 213677568. Its totient is φ = 132865920.

The previous prime is 172059137. The next prime is 172059191. The reversal of 172059145 is 541950271.

It is not a de Polignac number, because 172059145 - 2³ = 172059137 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 172059145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71197 + ... + 73573.

It is an arithmetic number, because the mean of its divisors is an integer number (13354848).

Almost surely, 2^172059145 is an apocalyptic number.

It is an amenable number.

172059145 is a deficient number, since it is larger than the sum of its proper divisors (41618423).

172059145 is a wasteful number, since it uses less digits than its factorization.

172059145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 172059145 is about 13117.1317367784. The cubic root of 172059145 is about 556.1935141060.

The spelling of 172059145 in words is "one hundred seventy-two million, fifty-nine thousand, one hundred forty-five".