91075 has 6 divisors (see below), whose sum is σ = 112964. Its totient is φ = 72840.

The previous prime is 91033. The next prime is 91079. The reversal of 91075 is 57019.

It is not a de Polignac number, because 91075 - 2⁷ = 90947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1797 + ... + 1846.

2⁹¹⁰⁷⁵ is an apocalyptic number.

91075 is a deficient number, since it is larger than the sum of its proper divisors (21889).

91075 is a wasteful number, since it uses less digits than its factorization.

91075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653 (or 3648 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 91075 is about 301.7863482665. The cubic root of 91075 is about 44.9917680415.

The spelling of 91075 in words is "ninety-one thousand, seventy-five".