115912171 has 4 divisors (see below), whose sum is σ = 122730552. Its totient is φ = 109093792.

The previous prime is 115912163. The next prime is 115912177. The reversal of 115912171 is 171219511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115912171 - 2³ = 115912163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115912177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3409165 + ... + 3409198.

It is an arithmetic number, because the mean of its divisors is an integer number (30682638).

Almost surely, 2^115912171 is an apocalyptic number.

115912171 is a deficient number, since it is larger than the sum of its proper divisors (6818381).

115912171 is an equidigital number, since it uses as much as digits as its factorization.

115912171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818380.

The product of its digits is 630, while the sum is 28.

The square root of 115912171 is about 10766.2514832229. The cubic root of 115912171 is about 487.5767782645.

The spelling of 115912171 in words is "one hundred fifteen million, nine hundred twelve thousand, one hundred seventy-one".