115165091 has 4 divisors (see below), whose sum is σ = 115262184. Its totient is φ = 115068000.

The previous prime is 115165069. The next prime is 115165097. The reversal of 115165091 is 190561511.

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 115165091 - 2¹⁸ = 114902947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115165097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46745 + ... + 49146.

It is an arithmetic number, because the mean of its divisors is an integer number (28815546).

Almost surely, 2^115165091 is an apocalyptic number.

115165091 is a deficient number, since it is larger than the sum of its proper divisors (97093).

115165091 is an equidigital number, since it uses as much as digits as its factorization.

115165091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97092.

The product of its (nonzero) digits is 1350, while the sum is 29.

The square root of 115165091 is about 10731.4999417602. The cubic root of 115165091 is about 486.5270057015.

The spelling of 115165091 in words is "one hundred fifteen million, one hundred sixty-five thousand, ninety-one".