85135543 has 4 divisors (see below), whose sum is σ = 86741928. Its totient is φ = 83529160.

The previous prime is 85135537. The next prime is 85135573. The reversal of 85135543 is 34553158.

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 85135543 - 2²¹ = 83038391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85135499 and 85135508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85135573) 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, 803113 + ... + 803218.

It is an arithmetic number, because the mean of its divisors is an integer number (21685482).

Almost surely, 2^85135543 is an apocalyptic number.

85135543 is a deficient number, since it is larger than the sum of its proper divisors (1606385).

85135543 is a wasteful number, since it uses less digits than its factorization.

85135543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606384.

The product of its digits is 36000, while the sum is 34.

The square root of 85135543 is about 9226.8923804280. The cubic root of 85135543 is about 439.9165527011.

The spelling of 85135543 in words is "eighty-five million, one hundred thirty-five thousand, five hundred forty-three".