91264055 has 4 divisors (see below), whose sum is σ = 109516872. Its totient is φ = 73011240.

The previous prime is 91264013. The next prime is 91264067. The reversal of 91264055 is 55046219.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 91264055 - 2²⁰ = 90215479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9126401 + ... + 9126410.

It is an arithmetic number, because the mean of its divisors is an integer number (27379218).

Almost surely, 2^91264055 is an apocalyptic number.

91264055 is a deficient number, since it is larger than the sum of its proper divisors (18252817).

91264055 is a wasteful number, since it uses less digits than its factorization.

91264055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18252816.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 91264055 is about 9553.2222312684. Note that the first 4 decimals coincide. The cubic root of 91264055 is about 450.2287807871.

The spelling of 91264055 in words is "ninety-one million, two hundred sixty-four thousand, fifty-five".