115305165 has 12 divisors (see below), whose sum is σ = 199862364. Its totient is φ = 61496064.

The previous prime is 115305163. The next prime is 115305173. The reversal of 115305165 is 561503511.

115305165 is a `hidden beast` number, since 115 + 30 + 516 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17413929 + 97891236 = 4173^2 + 9894^2 .

It is not a de Polignac number, because 115305165 - 2¹ = 115305163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115305163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1281124 + ... + 1281213.

It is an arithmetic number, because the mean of its divisors is an integer number (16655197).

Almost surely, 2^115305165 is an apocalyptic number.

115305165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115305165 is a deficient number, since it is larger than the sum of its proper divisors (84557199).

115305165 is a wasteful number, since it uses less digits than its factorization.

115305165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562348 (or 2562345 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 115305165 is about 10738.0242596113. The cubic root of 115305165 is about 486.7241782182.

Adding to 115305165 its reverse (561503511), we get a palindrome (676808676).

The spelling of 115305165 in words is "one hundred fifteen million, three hundred five thousand, one hundred sixty-five".