115772065 has 4 divisors (see below), whose sum is σ = 138926484. Its totient is φ = 92617648.

The previous prime is 115771991. The next prime is 115772071. The reversal of 115772065 is 560277511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560277511 = 59 ⋅9496229.

It can be written as a sum of positive squares in 2 ways, for example, as 14085009 + 101687056 = 3753^2 + 10084^2 .

It is a cyclic number.

It is not a de Polignac number, because 115772065 - 2⁷ = 115771937 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 115772065.

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 3 ways as a sum of consecutive naturals, for example, 11577202 + ... + 11577211.

It is an arithmetic number, because the mean of its divisors is an integer number (34731621).

Almost surely, 2^115772065 is an apocalyptic number.

It is an amenable number.

115772065 is a deficient number, since it is larger than the sum of its proper divisors (23154419).

115772065 is an equidigital number, since it uses as much as digits as its factorization.

115772065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23154418.

The product of its (nonzero) digits is 14700, while the sum is 34.

The square root of 115772065 is about 10759.7427943237. The cubic root of 115772065 is about 487.3802502276.

The spelling of 115772065 in words is "one hundred fifteen million, seven hundred seventy-two thousand, sixty-five".