115951765 has 4 divisors (see below), whose sum is σ = 139142124. Its totient is φ = 92761408.

The previous prime is 115951729. The next prime is 115951769. The reversal of 115951765 is 567159511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13010449 + 102941316 = 3607^2 + 10146^2 .

It is a cyclic number.

It is not a de Polignac number, because 115951765 - 2¹⁵ = 115918997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115951769) by changing a digit.

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, 11595172 + ... + 11595181.

It is an arithmetic number, because the mean of its divisors is an integer number (34785531).

Almost surely, 2^115951765 is an apocalyptic number.

It is an amenable number.

115951765 is a deficient number, since it is larger than the sum of its proper divisors (23190359).

115951765 is an equidigital number, since it uses as much as digits as its factorization.

115951765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23190358.

The product of its digits is 47250, while the sum is 40.

The square root of 115951765 is about 10768.0901277803. The cubic root of 115951765 is about 487.6322884469.

The spelling of 115951765 in words is "one hundred fifteen million, nine hundred fifty-one thousand, seven hundred sixty-five".