85168171 has 4 divisors (see below), whose sum is σ = 92910744. Its totient is φ = 77425600.

The previous prime is 85168169. The next prime is 85168177. The reversal of 85168171 is 17186158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85168171 - 2¹ = 85168169 is a prime.

It is a super-3 number, since 3×85168171³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85168171.

It is not an unprimeable number, because it can be changed into a prime (85168177) 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 3 ways as a sum of consecutive naturals, for example, 3871270 + ... + 3871291.

It is an arithmetic number, because the mean of its divisors is an integer number (23227686).

Almost surely, 2^85168171 is an apocalyptic number.

85168171 is a deficient number, since it is larger than the sum of its proper divisors (7742573).

85168171 is a wasteful number, since it uses less digits than its factorization.

85168171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7742572.

The product of its digits is 13440, while the sum is 37.

The square root of 85168171 is about 9228.6603036410. The cubic root of 85168171 is about 439.9727445238.

The spelling of 85168171 in words is "eighty-five million, one hundred sixty-eight thousand, one hundred seventy-one".