85822 has 16 divisors (see below), whose sum is σ = 145152. Its totient is φ = 37720.

The previous prime is 85819. The next prime is 85829. The reversal of 85822 is 22858.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993 + ... + 1075.

It is an arithmetic number, because the mean of its divisors is an integer number (9072).

2⁸⁵⁸²² is an apocalyptic number.

85822 is a deficient number, since it is larger than the sum of its proper divisors (59330).

85822 is a wasteful number, since it uses less digits than its factorization.

85822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143.

The product of its digits is 1280, while the sum is 25.

The square root of 85822 is about 292.9539212914. The cubic root of 85822 is about 44.1095753773.

The spelling of 85822 in words is "eighty-five thousand, eight hundred twenty-two".