115135540 has 24 divisors (see below), whose sum is σ = 260384040. Its totient is φ = 42511488.

The previous prime is 115135529. The next prime is 115135541. The reversal of 115135540 is 45531511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 345744 + 114789796 = 588^2 + 10714^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115135541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221155 + ... + 221674.

It is an arithmetic number, because the mean of its divisors is an integer number (10849335).

Almost surely, 2^115135540 is an apocalyptic number.

115135540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115135540 is an abundant number, since it is smaller than the sum of its proper divisors (145248500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115135540 is a wasteful number, since it uses less digits than its factorization.

115135540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442851 (or 442849 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 115135540 is about 10730.1230188661. The cubic root of 115135540 is about 486.4853883753.

The spelling of 115135540 in words is "one hundred fifteen million, one hundred thirty-five thousand, five hundred forty".