85261 has 8 divisors (see below), whose sum is σ = 97344. Its totient is φ = 73920.

The previous prime is 85259. The next prime is 85297. The reversal of 85261 is 16258.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85261 - 2¹ = 85259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 421.

It is an arithmetic number, because the mean of its divisors is an integer number (12168).

2⁸⁵²⁶¹ is an apocalyptic number.

It is an amenable number.

85261 is a deficient number, since it is larger than the sum of its proper divisors (12083).

85261 is a wasteful number, since it uses less digits than its factorization.

85261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

The product of its digits is 480, while the sum is 22.

The square root of 85261 is about 291.9948629685. The cubic root of 85261 is about 44.0132535831.

The spelling of 85261 in words is "eighty-five thousand, two hundred sixty-one".