85223169 has 6 divisors (see below), whose sum is σ = 123100146. Its totient is φ = 56815440.

The previous prime is 85223137. The next prime is 85223191. The reversal of 85223169 is 96132258.

It can be written as a sum of positive squares in only one way, i.e., 76737600 + 8485569 = 8760^2 + 2913^2 .

It is not a de Polignac number, because 85223169 - 2⁵ = 85223137 is a prime.

It is a super-2 number, since 2×85223169² = 14525977068805122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85223969) 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, 4734612 + ... + 4734629.

It is an arithmetic number, because the mean of its divisors is an integer number (20516691).

Almost surely, 2^85223169 is an apocalyptic number.

It is an amenable number.

85223169 is a deficient number, since it is larger than the sum of its proper divisors (37876977).

85223169 is a wasteful number, since it uses less digits than its factorization.

85223169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9469247 (or 9469244 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 85223169 is about 9231.6395618547. The cubic root of 85223169 is about 440.0674294043.

The spelling of 85223169 in words is "eighty-five million, two hundred twenty-three thousand, one hundred sixty-nine".