91125144 has 48 divisors (see below), whose sum is σ = 269235720. Its totient is φ = 27613440.

The previous prime is 91125131. The next prime is 91125169. The reversal of 91125144 is 44152119.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56737 + ... + 58320.

Almost surely, 2^91125144 is an apocalyptic number.

It is an amenable number.

91125144 is an abundant number, since it is smaller than the sum of its proper divisors (178110576).

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

91125144 is a wasteful number, since it uses less digits than its factorization.

91125144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115080 (or 115073 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 91125144 is about 9545.9490884877. The cubic root of 91125144 is about 450.0002370369. Note that the first 3 decimals are identical.

The spelling of 91125144 in words is "ninety-one million, one hundred twenty-five thousand, one hundred forty-four".