85523173 has 8 divisors (see below), whose sum is σ = 87645888. Its totient is φ = 83406624.

The previous prime is 85523147. The next prime is 85523183. The reversal of 85523173 is 37132558.

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

It is a cyclic number.

It is not a de Polignac number, because 85523173 - 2¹⁷ = 85392101 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 (85523183) 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, 39936 + ... + 42022.

It is an arithmetic number, because the mean of its divisors is an integer number (10955736).

Almost surely, 2^85523173 is an apocalyptic number.

It is an amenable number.

85523173 is a deficient number, since it is larger than the sum of its proper divisors (2122715).

85523173 is a wasteful number, since it uses less digits than its factorization.

85523173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083.

The product of its digits is 25200, while the sum is 34.

The square root of 85523173 is about 9247.8739718921. The cubic root of 85523173 is about 440.5832021985.

The spelling of 85523173 in words is "eighty-five million, five hundred twenty-three thousand, one hundred seventy-three".