91256499 has 12 divisors (see below), whose sum is σ = 131980576. Its totient is φ = 60761232.

The previous prime is 91256483. The next prime is 91256519. The reversal of 91256499 is 99465219.

It is not a de Polignac number, because 91256499 - 2⁴ = 91256483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91256299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1734 + ... + 13620.

Almost surely, 2^91256499 is an apocalyptic number.

91256499 is a deficient number, since it is larger than the sum of its proper divisors (40724077).

91256499 is a wasteful number, since it uses less digits than its factorization.

91256499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12746 (or 12743 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 91256499 is about 9552.8267544220. The cubic root of 91256499 is about 450.2163552213.

The spelling of 91256499 in words is "ninety-one million, two hundred fifty-six thousand, four hundred ninety-nine".