115086591 has 24 divisors (see below), whose sum is σ = 175659120. Its totient is φ = 72406656.

The previous prime is 115086581. The next prime is 115086623. The reversal of 115086591 is 195680511.

115086591 is a `hidden beast` number, since 1 + 1 + 508 + 65 + 91 = 666.

It is not a de Polignac number, because 115086591 - 2⁷ = 115086463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115086541) 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 23 ways as a sum of consecutive naturals, for example, 48955 + ... + 51251.

It is an arithmetic number, because the mean of its divisors is an integer number (7319130).

Almost surely, 2^115086591 is an apocalyptic number.

115086591 is a deficient number, since it is larger than the sum of its proper divisors (60572529).

115086591 is a wasteful number, since it uses less digits than its factorization.

115086591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615 (or 2612 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 36.

The square root of 115086591 is about 10727.8418612506. The cubic root of 115086591 is about 486.4164367475.

The spelling of 115086591 in words is "one hundred fifteen million, eighty-six thousand, five hundred ninety-one".