117597217 has 4 divisors (see below), whose sum is σ = 120332080. Its totient is φ = 114862356.

The previous prime is 117597209. The next prime is 117597241. The reversal of 117597217 is 712795711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117597217 - 2³ = 117597209 is a prime.

It is a super-2 number, since 2×117597217² = 27658210892290178, which contains 22 as substring.

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 117597217.

It is not an unprimeable number, because it can be changed into a prime (117597287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1367367 + ... + 1367452.

It is an arithmetic number, because the mean of its divisors is an integer number (30083020).

Almost surely, 2^117597217 is an apocalyptic number.

It is an amenable number.

117597217 is a deficient number, since it is larger than the sum of its proper divisors (2734863).

117597217 is an equidigital number, since it uses as much as digits as its factorization.

117597217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734862.

The product of its digits is 30870, while the sum is 40.

The square root of 117597217 is about 10844.2250529948. The cubic root of 117597217 is about 489.9280985711.

The spelling of 117597217 in words is "one hundred seventeen million, five hundred ninety-seven thousand, two hundred seventeen".