85102543 has 4 divisors (see below), whose sum is σ = 85666288. Its totient is φ = 84538800.

The previous prime is 85102541. The next prime is 85102579. The reversal of 85102543 is 34520158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34520158 = 2 ⋅17260079.

It is a cyclic number.

It is not a de Polignac number, because 85102543 - 2¹ = 85102541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85102541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281646 + ... + 281947.

It is an arithmetic number, because the mean of its divisors is an integer number (21416572).

Almost surely, 2^85102543 is an apocalyptic number.

85102543 is a deficient number, since it is larger than the sum of its proper divisors (563745).

85102543 is a wasteful number, since it uses less digits than its factorization.

85102543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563744.

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

The square root of 85102543 is about 9225.1039560538. The cubic root of 85102543 is about 439.8597056161.

The spelling of 85102543 in words is "eighty-five million, one hundred two thousand, five hundred forty-three".