85012543 has 24 divisors (see below), whose sum is σ = 110507040. Its totient is φ = 63940800.

The previous prime is 85012513. The next prime is 85012553. The reversal of 85012543 is 34521058.

It is a de Polignac number, because none of the positive numbers 2^k-85012543 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85012513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22833 + ... + 26293.

It is an arithmetic number, because the mean of its divisors is an integer number (4604460).

Almost surely, 2^85012543 is an apocalyptic number.

85012543 is a deficient number, since it is larger than the sum of its proper divisors (25494497).

85012543 is a wasteful number, since it uses less digits than its factorization.

85012543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519 (or 3508 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 85012543 is about 9220.2246718830. The cubic root of 85012543 is about 439.7045933813.

The spelling of 85012543 in words is "eighty-five million, twelve thousand, five hundred forty-three".