115091665 has 16 divisors (see below), whose sum is σ = 149235408. Its totient is φ = 84704256.

The previous prime is 115091657. The next prime is 115091671. The reversal of 115091665 is 566190511.

It can be written as a sum of positive squares in 8 ways, for example, as 65092624 + 49999041 = 8068^2 + 7071^2 .

It is not a de Polignac number, because 115091665 - 2³ = 115091657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115091665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17517 + ... + 23173.

It is an arithmetic number, because the mean of its divisors is an integer number (9327213).

Almost surely, 2^115091665 is an apocalyptic number.

It is an amenable number.

115091665 is a deficient number, since it is larger than the sum of its proper divisors (34143743).

115091665 is a wasteful number, since it uses less digits than its factorization.

115091665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5988.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 115091665 is about 10728.0783460972. The cubic root of 115091665 is about 486.4235851063.

The spelling of 115091665 in words is "one hundred fifteen million, ninety-one thousand, six hundred sixty-five".