85172854 has 16 divisors (see below), whose sum is σ = 138363120. Its totient is φ = 39088800.

The previous prime is 85172851. The next prime is 85172881. The reversal of 85172854 is 45827158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85172851) 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 7 ways as a sum of consecutive naturals, for example, 4497 + ... + 13804.

It is an arithmetic number, because the mean of its divisors is an integer number (8647695).

Almost surely, 2^85172854 is an apocalyptic number.

85172854 is a deficient number, since it is larger than the sum of its proper divisors (53190266).

85172854 is a wasteful number, since it uses less digits than its factorization.

85172854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18495.

The product of its digits is 89600, while the sum is 40.

The square root of 85172854 is about 9228.9140206202. The cubic root of 85172854 is about 439.9808083916.

The spelling of 85172854 in words is "eighty-five million, one hundred seventy-two thousand, eight hundred fifty-four".