91855316 has 24 divisors (see below), whose sum is σ = 186231360. Its totient is φ = 38826432.

The previous prime is 91855303. The next prime is 91855319. The reversal of 91855316 is 61355819.

It is a self number, because there is not a number n which added to its sum of digits gives 91855316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91855319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20426 + ... + 24513.

It is an arithmetic number, because the mean of its divisors is an integer number (7759640).

Almost surely, 2^91855316 is an apocalyptic number.

It is an amenable number.

91855316 is an abundant number, since it is smaller than the sum of its proper divisors (94376044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91855316 is a wasteful number, since it uses less digits than its factorization.

91855316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45023 (or 45021 counting only the distinct ones).

The product of its digits is 32400, while the sum is 38.

The square root of 91855316 is about 9584.1179041162. The cubic root of 91855316 is about 451.1989689148.

The spelling of 91855316 in words is "ninety-one million, eight hundred fifty-five thousand, three hundred sixteen".