115265511 has 20 divisors (see below), whose sum is σ = 172497600. Its totient is φ = 76705056.

The previous prime is 115265497. The next prime is 115265531. The reversal of 115265511 is 115562511.

115265511 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 655 + 1 + 1 = 666.

It is not a de Polignac number, because 115265511 - 2¹³ = 115257319 is a prime.

It is a super-2 number, since 2×115265511² = 26572276052182242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115265531) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64650 + ... + 66408.

It is an arithmetic number, because the mean of its divisors is an integer number (8624880).

Almost surely, 2^115265511 is an apocalyptic number.

115265511 is a deficient number, since it is larger than the sum of its proper divisors (57232089).

115265511 is an equidigital number, since it uses as much as digits as its factorization.

115265511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580 (or 2571 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The square root of 115265511 is about 10736.1776717787. The cubic root of 115265511 is about 486.6683762268.

The spelling of 115265511 in words is "one hundred fifteen million, two hundred sixty-five thousand, five hundred eleven".