117251217 has 12 divisors (see below), whose sum is σ = 176726784. Its totient is φ = 74768760.

The previous prime is 117251209. The next prime is 117251221. The reversal of 117251217 is 712152711.

It is not a de Polignac number, because 117251217 - 2³ = 117251209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117251297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283009 + ... + 283422.

It is an arithmetic number, because the mean of its divisors is an integer number (14727232).

Almost surely, 2^117251217 is an apocalyptic number.

It is an amenable number.

117251217 is a deficient number, since it is larger than the sum of its proper divisors (59475567).

117251217 is a wasteful number, since it uses less digits than its factorization.

117251217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566460 (or 566457 counting only the distinct ones).

The product of its digits is 980, while the sum is 27.

The square root of 117251217 is about 10828.2601095467. The cubic root of 117251217 is about 489.4471301421.

The spelling of 117251217 in words is "one hundred seventeen million, two hundred fifty-one thousand, two hundred seventeen".