115213615 has 16 divisors (see below), whose sum is σ = 152526240. Its totient is φ = 82846720.

The previous prime is 115213603. The next prime is 115213643. The reversal of 115213615 is 516312511.

It is a happy number.

It is not a de Polignac number, because 115213615 - 2²¹ = 113116463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115213615.

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, 6874 + ... + 16663.

It is an arithmetic number, because the mean of its divisors is an integer number (9532890).

Almost surely, 2^115213615 is an apocalyptic number.

115213615 is a deficient number, since it is larger than the sum of its proper divisors (37312625).

115213615 is a wasteful number, since it uses less digits than its factorization.

115213615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23642.

The product of its digits is 900, while the sum is 25.

The square root of 115213615 is about 10733.7605246251. The cubic root of 115213615 is about 486.5953276825.

The spelling of 115213615 in words is "one hundred fifteen million, two hundred thirteen thousand, six hundred fifteen".