91253856 has 48 divisors (see below), whose sum is σ = 240033024. Its totient is φ = 30355584.

The previous prime is 91253843. The next prime is 91253873. The reversal of 91253856 is 65835219.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92341 + ... + 93323.

It is an arithmetic number, because the mean of its divisors is an integer number (5000688).

Almost surely, 2^91253856 is an apocalyptic number.

91253856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

91253856 is an abundant number, since it is smaller than the sum of its proper divisors (148779168).

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

91253856 is a wasteful number, since it uses less digits than its factorization.

91253856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963 (or 1955 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 91253856 is about 9552.6884174038. The cubic root of 91253856 is about 450.2120087425.

The spelling of 91253856 in words is "ninety-one million, two hundred fifty-three thousand, eight hundred fifty-six".