85522 has 8 divisors (see below), whose sum is σ = 130572. Its totient is φ = 42000.

The previous prime is 85517. The next prime is 85523. The reversal of 85522 is 22558.

It can be written as a sum of positive squares in 2 ways, for example, as 84681 + 841 = 291^2 + 29^2 .

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

It is an Ulam number.

It is a nialpdrome in base 10.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 85493 and 85502.

It is not an unprimeable number, because it can be changed into a prime (85523) by changing a digit.

85522 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229 + ... + 472.

2⁸⁵⁵²² is an apocalyptic number.

85522 is a deficient number, since it is larger than the sum of its proper divisors (45050).

85522 is a wasteful number, since it uses less digits than its factorization.

85522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its digits is 800, while the sum is 22.

The square root of 85522 is about 292.4414471309. The cubic root of 85522 is about 44.0581187904.

The spelling of 85522 in words is "eighty-five thousand, five hundred twenty-two".