91148275 has 12 divisors (see below), whose sum is σ = 115430112. Its totient is φ = 71366240.

The previous prime is 91148269. The next prime is 91148293. The reversal of 91148275 is 57284119.

It is not a de Polignac number, because 91148275 - 2⁵ = 91148243 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37612 + ... + 39961.

It is an arithmetic number, because the mean of its divisors is an integer number (9619176).

Almost surely, 2^91148275 is an apocalyptic number.

91148275 is a deficient number, since it is larger than the sum of its proper divisors (24281837).

91148275 is a wasteful number, since it uses less digits than its factorization.

91148275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77630 (or 77625 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 91148275 is about 9547.1605726520. The cubic root of 91148275 is about 450.0383094957.

The spelling of 91148275 in words is "ninety-one million, one hundred forty-eight thousand, two hundred seventy-five".