91944051 has 8 divisors (see below), whose sum is σ = 123404544. Its totient is φ = 60889800.

The previous prime is 91944049. The next prime is 91944089. The reversal of 91944051 is 15044919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91944051 - 2¹ = 91944049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91944091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101031 + ... + 101936.

It is an arithmetic number, because the mean of its divisors is an integer number (15425568).

Almost surely, 2^91944051 is an apocalyptic number.

91944051 is a deficient number, since it is larger than the sum of its proper divisors (31460493).

91944051 is a wasteful number, since it uses less digits than its factorization.

91944051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203121.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 91944051 is about 9588.7460598349. The cubic root of 91944051 is about 451.3442127497.

The spelling of 91944051 in words is "ninety-one million, nine hundred forty-four thousand, fifty-one".