115639265 has 12 divisors (see below), whose sum is σ = 161423316. Its totient is φ = 79295328.

The previous prime is 115639261. The next prime is 115639267. The reversal of 115639265 is 562936511.

It can be written as a sum of positive squares in 2 ways, for example, as 20830096 + 94809169 = 4564^2 + 9737^2 .

It is not a de Polignac number, because 115639265 - 2² = 115639261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115639261) 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 11 ways as a sum of consecutive naturals, for example, 235754 + ... + 236243.

It is an arithmetic number, because the mean of its divisors is an integer number (13451943).

Almost surely, 2^115639265 is an apocalyptic number.

It is an amenable number.

115639265 is a deficient number, since it is larger than the sum of its proper divisors (45784051).

115639265 is an equidigital number, since it uses as much as digits as its factorization.

115639265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472016 (or 472009 counting only the distinct ones).

The product of its digits is 48600, while the sum is 38.

The square root of 115639265 is about 10753.5698723726. The cubic root of 115639265 is about 487.1938239628.

The spelling of 115639265 in words is "one hundred fifteen million, six hundred thirty-nine thousand, two hundred sixty-five".