117155172 has 24 divisors (see below), whose sum is σ = 280751296. Its totient is φ = 37996128.

The previous prime is 117155153. The next prime is 117155267. The reversal of 117155172 is 271551711.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131488 + ... + 132375.

Almost surely, 2^117155172 is an apocalyptic number.

117155172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117155172 is an abundant number, since it is smaller than the sum of its proper divisors (163596124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117155172 is a wasteful number, since it uses less digits than its factorization.

117155172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263907 (or 263905 counting only the distinct ones).

The product of its digits is 2450, while the sum is 30.

The square root of 117155172 is about 10823.8242779528. The cubic root of 117155172 is about 489.3134519530.

The spelling of 117155172 in words is "one hundred seventeen million, one hundred fifty-five thousand, one hundred seventy-two".