85152171 has 12 divisors (see below), whose sum is σ = 122942328. Its totient is φ = 52401024.

The previous prime is 85152143. The next prime is 85152209. The reversal of 85152171 is 17125158.

It is not a de Polignac number, because 85152171 - 2¹¹ = 85150123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85152271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83470 + ... + 84483.

It is an arithmetic number, because the mean of its divisors is an integer number (10245194).

Almost surely, 2^85152171 is an apocalyptic number.

85152171 is a deficient number, since it is larger than the sum of its proper divisors (37790157).

85152171 is a wasteful number, since it uses less digits than its factorization.

85152171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167982 (or 167969 counting only the distinct ones).

The product of its digits is 2800, while the sum is 30.

The square root of 85152171 is about 9227.7933982074. The cubic root of 85152171 is about 439.9451911757.

The spelling of 85152171 in words is "eighty-five million, one hundred fifty-two thousand, one hundred seventy-one".