115212515 has 16 divisors (see below), whose sum is σ = 151047936. Its totient is φ = 83666400.

The previous prime is 115212511. The next prime is 115212527. The reversal of 115212515 is 515212511.

It is not a de Polignac number, because 115212515 - 2² = 115212511 is a prime.

It is a super-2 number, since 2×115212515² = 26547847225250450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115212511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53000 + ... + 55130.

It is an arithmetic number, because the mean of its divisors is an integer number (9440496).

Almost surely, 2^115212515 is an apocalyptic number.

115212515 is a deficient number, since it is larger than the sum of its proper divisors (35835421).

115212515 is a wasteful number, since it uses less digits than its factorization.

115212515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130.

The product of its digits is 500, while the sum is 23.

The square root of 115212515 is about 10733.7092843061. The cubic root of 115212515 is about 486.5937790907.

The spelling of 115212515 in words is "one hundred fifteen million, two hundred twelve thousand, five hundred fifteen".