115212520 has 32 divisors (see below), whose sum is σ = 270501120. Its totient is φ = 44080960.

The previous prime is 115212511. The next prime is 115212527. The reversal of 115212520 is 25212511.

It is not an unprimeable number, because it can be changed into a prime (115212527) 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, 61696 + ... + 63535.

It is an arithmetic number, because the mean of its divisors is an integer number (8453160).

Almost surely, 2^115212520 is an apocalyptic number.

115212520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115212520 is an abundant number, since it is smaller than the sum of its proper divisors (155288600).

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

115212520 is a wasteful number, since it uses less digits than its factorization.

115212520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125265 (or 125261 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 115212520 is about 10733.7095172172. The cubic root of 115212520 is about 486.5937861298.

Subtracting from 115212520 its reverse (25212511), we obtain a palindrome (90000009).

It can be divided in two parts, 11521 and 2520, that added together give a palindrome (14041).

The spelling of 115212520 in words is "one hundred fifteen million, two hundred twelve thousand, five hundred twenty".