91272475 has 12 divisors (see below), whose sum is σ = 129346384. Its totient is φ = 62586720.

The previous prime is 91272457. The next prime is 91272491. The reversal of 91272475 is 57427219.

It is not a de Polignac number, because 91272475 - 2¹¹ = 91270427 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian 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, 260604 + ... + 260953.

Almost surely, 2^91272475 is an apocalyptic number.

91272475 is a deficient number, since it is larger than the sum of its proper divisors (38073909).

91272475 is a wasteful number, since it uses less digits than its factorization.

91272475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521574 (or 521569 counting only the distinct ones).

The product of its digits is 35280, while the sum is 37.

The square root of 91272475 is about 9553.6629101094. The cubic root of 91272475 is about 450.2426263614.

The spelling of 91272475 in words is "ninety-one million, two hundred seventy-two thousand, four hundred seventy-five".