91054992 has 160 divisors (see below), whose sum is σ = 299980800. Its totient is φ = 23169024.

The previous prime is 91054991. The next prime is 91055021. The reversal of 91054992 is 29945019.

It is a self number, because there is not a number n which added to its sum of digits gives 91054992.

It is not an unprimeable number, because it can be changed into a prime (91054991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108109 + ... + 108947.

It is an arithmetic number, because the mean of its divisors is an integer number (1874880).

Almost surely, 2^91054992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91054992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149990400).

91054992 is an abundant number, since it is smaller than the sum of its proper divisors (208925808).

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

91054992 is a wasteful number, since it uses less digits than its factorization.

91054992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 91054992 is about 9542.2739428294. The cubic root of 91054992 is about 449.8847309698.

The spelling of 91054992 in words is "ninety-one million, fifty-four thousand, nine hundred ninety-two".