172612017 has 24 divisors (see below), whose sum is σ = 262978560. Its totient is φ = 108799200.

The previous prime is 172611997. The next prime is 172612039. The reversal of 172612017 is 710216271.

172612017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172612017 - 2⁶ = 172611953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172612057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149392 + ... + 150542.

It is an arithmetic number, because the mean of its divisors is an integer number (10957440).

Almost surely, 2^172612017 is an apocalyptic number.

It is an amenable number.

172612017 is a deficient number, since it is larger than the sum of its proper divisors (90366543).

172612017 is a wasteful number, since it uses less digits than its factorization.

172612017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2050 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 172612017 is about 13138.1892587982. The cubic root of 172612017 is about 556.7886099440.

Adding to 172612017 its reverse (710216271), we get a palindrome (882828288).

The spelling of 172612017 in words is "one hundred seventy-two million, six hundred twelve thousand, seventeen".