115891775 has 12 divisors (see below), whose sum is σ = 143839752. Its totient is φ = 92627040.

The previous prime is 115891759. The next prime is 115891793. The reversal of 115891775 is 577198511.

It is not a de Polignac number, because 115891775 - 2⁴ = 115891759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 48509 + ... + 50841.

It is an arithmetic number, because the mean of its divisors is an integer number (11986646).

Almost surely, 2^115891775 is an apocalyptic number.

115891775 is a deficient number, since it is larger than the sum of its proper divisors (27947977).

115891775 is a wasteful number, since it uses less digits than its factorization.

115891775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330 (or 4325 counting only the distinct ones).

The product of its digits is 88200, while the sum is 44.

The square root of 115891775 is about 10765.3042223618. The cubic root of 115891775 is about 487.5481784513.

The spelling of 115891775 in words is "one hundred fifteen million, eight hundred ninety-one thousand, seven hundred seventy-five".