85172253 has 8 divisors (see below), whose sum is σ = 113607648. Its totient is φ = 56759184.

The previous prime is 85172183. The next prime is 85172257. The reversal of 85172253 is 35227158.

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

It is not a de Polignac number, because 85172253 - 2²⁴ = 68395037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85172257) 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, 8151 + ... + 15387.

It is an arithmetic number, because the mean of its divisors is an integer number (14200956).

Almost surely, 2^85172253 is an apocalyptic number.

It is an amenable number.

85172253 is a deficient number, since it is larger than the sum of its proper divisors (28435395).

85172253 is a wasteful number, since it uses less digits than its factorization.

85172253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11163.

The product of its digits is 16800, while the sum is 33.

The square root of 85172253 is about 9228.8814598520. The cubic root of 85172253 is about 439.9797735193.

The spelling of 85172253 in words is "eighty-five million, one hundred seventy-two thousand, two hundred fifty-three".