117172017 has 6 divisors (see below), whose sum is σ = 169248482. Its totient is φ = 78114672.

The previous prime is 117172001. The next prime is 117172039. The reversal of 117172017 is 710271711.

It can be written as a sum of positive squares in only one way, i.e., 75064896 + 42107121 = 8664^2 + 6489^2 .

It is not a de Polignac number, because 117172017 - 2⁴ = 117172001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117172117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6509548 + ... + 6509565.

Almost surely, 2^117172017 is an apocalyptic number.

It is an amenable number.

117172017 is a deficient number, since it is larger than the sum of its proper divisors (52076465).

117172017 is a wasteful number, since it uses less digits than its factorization.

117172017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13019119 (or 13019116 counting only the distinct ones).

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

The square root of 117172017 is about 10824.6023945455. The cubic root of 117172017 is about 489.3369025895.

The spelling of 117172017 in words is "one hundred seventeen million, one hundred seventy-two thousand, seventeen".