115215507 has 32 divisors (see below), whose sum is σ = 187968000. Its totient is φ = 69167520.

The previous prime is 115215497. The next prime is 115215523. The reversal of 115215507 is 705512511.

115215507 is a `hidden beast` number, since 1 + 152 + 1 + 5 + 507 = 666.

It is not a de Polignac number, because 115215507 - 2¹⁰ = 115214483 is a prime.

It is a super-2 number, since 2×115215507² = 26549226106534098, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (115215547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30594 + ... + 34152.

It is an arithmetic number, because the mean of its divisors is an integer number (5874000).

Almost surely, 2^115215507 is an apocalyptic number.

115215507 is a deficient number, since it is larger than the sum of its proper divisors (72752493).

115215507 is a wasteful number, since it uses less digits than its factorization.

115215507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688 (or 3682 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 115215507 is about 10733.8486574015. The cubic root of 115215507 is about 486.5979912372.

The spelling of 115215507 in words is "one hundred fifteen million, two hundred fifteen thousand, five hundred seven".