99312515 has 8 divisors (see below), whose sum is σ = 119355120. Its totient is φ = 79329952.

The previous prime is 99312509. The next prime is 99312529. The reversal of 99312515 is 51521399.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99312515 - 2¹⁰ = 99311491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11285 + ... + 18054.

It is an arithmetic number, because the mean of its divisors is an integer number (14919390).

Almost surely, 2^99312515 is an apocalyptic number.

99312515 is a deficient number, since it is larger than the sum of its proper divisors (20042605).

99312515 is a wasteful number, since it uses less digits than its factorization.

99312515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30021.

The product of its digits is 12150, while the sum is 35.

The square root of 99312515 is about 9965.5664665888. The cubic root of 99312515 is about 463.0927622419.

The spelling of 99312515 in words is "ninety-nine million, three hundred twelve thousand, five hundred fifteen".