85291 has 6 divisors (see below), whose sum is σ = 91140. Its totient is φ = 79596.

The previous prime is 85259. The next prime is 85297. The reversal of 85291 is 19258.

It is not a de Polignac number, because 85291 - 2⁵ = 85259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85297) 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, 1240 + ... + 1306.

It is an arithmetic number, because the mean of its divisors is an integer number (15190).

2⁸⁵²⁹¹ is an apocalyptic number.

85291 is a deficient number, since it is larger than the sum of its proper divisors (5849).

85291 is an equidigital number, since it uses as much as digits as its factorization.

85291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 86 counting only the distinct ones).

The product of its digits is 720, while the sum is 25.

The square root of 85291 is about 292.0462292172. The cubic root of 85291 is about 44.0184151567.

The spelling of 85291 in words is "eighty-five thousand, two hundred ninety-one".