91275 has 12 divisors (see below), whose sum is σ = 151032. Its totient is φ = 48640.

The previous prime is 91253. The next prime is 91283. The reversal of 91275 is 57219.

It is not a de Polignac number, because 91275 - 2⁵ = 91243 is a prime.

It is a super-2 number, since 2×91275² = 16662251250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

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, 534 + ... + 683.

It is an arithmetic number, because the mean of its divisors is an integer number (12586).

2⁹¹²⁷⁵ is an apocalyptic number.

91275 is a deficient number, since it is larger than the sum of its proper divisors (59757).

91275 is a wasteful number, since it uses less digits than its factorization.

91275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230 (or 1225 counting only the distinct ones).

The product of its digits is 630, while the sum is 24.

The square root of 91275 is about 302.1175268004. The cubic root of 91275 is about 45.0246778223.

The spelling of 91275 in words is "ninety-one thousand, two hundred seventy-five".