115530520 has 32 divisors (see below), whose sum is σ = 297079200. Its totient is φ = 39610368.

The previous prime is 115530509. The next prime is 115530529. The reversal of 115530520 is 25035511.

It is a junction number, because it is equal to n+sod(n) for n = 115530491 and 115530500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115530529) 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, 206025 + ... + 206584.

It is an arithmetic number, because the mean of its divisors is an integer number (9283725).

Almost surely, 2^115530520 is an apocalyptic number.

115530520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115530520 is an abundant number, since it is smaller than the sum of its proper divisors (181548680).

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

115530520 is a wasteful number, since it uses less digits than its factorization.

115530520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412627 (or 412623 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 115530520 is about 10748.5124552191. The cubic root of 115530520 is about 487.0410600834.

The spelling of 115530520 in words is "one hundred fifteen million, five hundred thirty thousand, five hundred twenty".