115215510 has 32 divisors (see below), whose sum is σ = 288541440. Its totient is φ = 29388128.

The previous prime is 115215497. The next prime is 115215523. The reversal of 115215510 is 15512511.

It is an interprime number because it is at equal distance from previous prime (115215497) and next prime (115215523).

It is a super-2 number, since 2×115215510² = 26549227489120200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82800 + ... + 84179.

It is an arithmetic number, because the mean of its divisors is an integer number (9016920).

Almost surely, 2^115215510 is an apocalyptic number.

115215510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115215510 is an abundant number, since it is smaller than the sum of its proper divisors (173325930).

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

115215510 is a wasteful number, since it uses less digits than its factorization.

115215510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167012.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 115215510 is about 10733.8487971463. The cubic root of 115215510 is about 486.5979954606.

The spelling of 115215510 in words is "one hundred fifteen million, two hundred fifteen thousand, five hundred ten".