91259 has 4 divisors (see below), whose sum is σ = 104304. Its totient is φ = 78216.

The previous prime is 91253. The next prime is 91283. The reversal of 91259 is 95219.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91259 - 2⁴ = 91243 is a prime.

It is a Duffinian number.

91259 is a modest number, since divided by 259 gives 91 as remainder.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91259.

It is not an unprimeable number, because it can be changed into a prime (91253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6512 + ... + 6525.

It is an arithmetic number, because the mean of its divisors is an integer number (26076).

2⁹¹²⁵⁹ is an apocalyptic number.

91259 is a deficient number, since it is larger than the sum of its proper divisors (13045).

91259 is a wasteful number, since it uses less digits than its factorization.

91259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13044.

The product of its digits is 810, while the sum is 26.

The square root of 91259 is about 302.0910458786. The cubic root of 91259 is about 45.0220468100.

The spelling of 91259 in words is "ninety-one thousand, two hundred fifty-nine".