172717011 has 36 divisors (see below), whose sum is σ = 272204920. Its totient is φ = 105235200.

The previous prime is 172717009. The next prime is 172717021. The reversal of 172717011 is 110717271.

It is not a de Polignac number, because 172717011 - 2¹ = 172717009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172717001) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 143211 + ... + 144411.

Almost surely, 2^172717011 is an apocalyptic number.

172717011 is a deficient number, since it is larger than the sum of its proper divisors (99487909).

172717011 is a wasteful number, since it uses less digits than its factorization.

172717011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 686, while the sum is 27.

The square root of 172717011 is about 13142.1844074720. The cubic root of 172717011 is about 556.9014788998.

The spelling of 172717011 in words is "one hundred seventy-two million, seven hundred seventeen thousand, eleven".