115173891 has 24 divisors (see below), whose sum is σ = 191403264. Its totient is φ = 65372400.

The previous prime is 115173881. The next prime is 115173893. The reversal of 115173891 is 198371511.

It is not a de Polignac number, because 115173891 - 2¹⁰ = 115172867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115173893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3460 + ... + 15566.

It is an arithmetic number, because the mean of its divisors is an integer number (7975136).

Almost surely, 2^115173891 is an apocalyptic number.

115173891 is a deficient number, since it is larger than the sum of its proper divisors (76229373).

115173891 is a wasteful number, since it uses less digits than its factorization.

115173891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12271 (or 12268 counting only the distinct ones).

The product of its digits is 7560, while the sum is 36.

The square root of 115173891 is about 10731.9099418510. The cubic root of 115173891 is about 486.5393975602.

The spelling of 115173891 in words is "one hundred fifteen million, one hundred seventy-three thousand, eight hundred ninety-one".