91054872 has 24 divisors (see below), whose sum is σ = 246607140. Its totient is φ = 30351600.

The previous prime is 91054841. The next prime is 91054889. The reversal of 91054872 is 27845019.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 5 ways as a sum of consecutive naturals, for example, 632254 + ... + 632397.

Almost surely, 2^91054872 is an apocalyptic number.

It is an amenable number.

91054872 is an abundant number, since it is smaller than the sum of its proper divisors (155552268).

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

91054872 is a wasteful number, since it uses less digits than its factorization.

91054872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264663 (or 1264656 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 91054872 is about 9542.2676550179. The cubic root of 91054872 is about 449.8845333376.

The spelling of 91054872 in words is "ninety-one million, fifty-four thousand, eight hundred seventy-two".