85172275 has 18 divisors (see below), whose sum is σ = 109408052. Its totient is φ = 65772000.

The previous prime is 85172257. The next prime is 85172279. The reversal of 85172275 is 57227158.

It is not a de Polignac number, because 85172275 - 2⁷ = 85172147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85172279) 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 17 ways as a sum of consecutive naturals, for example, 19000 + ... + 23050.

Almost surely, 2^85172275 is an apocalyptic number.

85172275 is a deficient number, since it is larger than the sum of its proper divisors (24235777).

85172275 is a wasteful number, since it uses less digits than its factorization.

85172275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119 (or 4085 counting only the distinct ones).

The product of its digits is 39200, while the sum is 37.

The square root of 85172275 is about 9228.8826517623. The cubic root of 85172275 is about 439.9798114015.

The spelling of 85172275 in words is "eighty-five million, one hundred seventy-two thousand, two hundred seventy-five".