85143285 has 32 divisors (see below), whose sum is σ = 151774080. Its totient is φ = 45287424.

The previous prime is 85143257. The next prime is 85143287. The reversal of 85143285 is 58234158.

It is a happy number.

It is not a de Polignac number, because 85143285 - 2⁸ = 85143029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85143287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73269 + ... + 74421.

It is an arithmetic number, because the mean of its divisors is an integer number (4742940).

Almost surely, 2^85143285 is an apocalyptic number.

It is an amenable number.

85143285 is a deficient number, since it is larger than the sum of its proper divisors (66630795).

85143285 is a wasteful number, since it uses less digits than its factorization.

85143285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1708 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 85143285 is about 9227.3119054251. The cubic root of 85143285 is about 439.9298872443.

The spelling of 85143285 in words is "eighty-five million, one hundred forty-three thousand, two hundred eighty-five".