115191 has 6 divisors (see below), whose sum is σ = 166400. Its totient is φ = 76788.

The previous prime is 115183. The next prime is 115201. The reversal of 115191 is 191511.

It is not a de Polignac number, because 115191 - 2³ = 115183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6391 + ... + 6408.

2¹¹⁵¹⁹¹ is an apocalyptic number.

115191 is a deficient number, since it is larger than the sum of its proper divisors (51209).

115191 is a wasteful number, since it uses less digits than its factorization.

115191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12805 (or 12802 counting only the distinct ones).

The product of its digits is 45, while the sum is 18.

The square root of 115191 is about 339.3979964584. The cubic root of 115191 is about 48.6563488062.

The spelling of 115191 in words is "one hundred fifteen thousand, one hundred ninety-one".