91516315 has 32 divisors (see below), whose sum is σ = 125012160. Its totient is φ = 63705600.

The previous prime is 91516289. The next prime is 91516339. The reversal of 91516315 is 51361519.

It is not a de Polignac number, because 91516315 - 2¹⁵ = 91483547 is a prime.

It is a super-2 number, since 2×91516315² = 16750471822358450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288537 + ... + 288853.

It is an arithmetic number, because the mean of its divisors is an integer number (3906630).

Almost surely, 2^91516315 is an apocalyptic number.

91516315 is a deficient number, since it is larger than the sum of its proper divisors (33495845).

91516315 is a wasteful number, since it uses less digits than its factorization.

91516315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543.

The product of its digits is 4050, while the sum is 31.

The square root of 91516315 is about 9566.4159955544. The cubic root of 91516315 is about 450.6432200750.

The spelling of 91516315 in words is "ninety-one million, five hundred sixteen thousand, three hundred fifteen".