85894559 has 2 divisors, whose sum is σ = 85894560. Its totient is φ = 85894558.

The previous prime is 85894531. The next prime is 85894597. The reversal of 85894559 is 95549858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85894559 - 2²⁴ = 69117343 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85894559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85894859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42947279 + 42947280.

It is an arithmetic number, because the mean of its divisors is an integer number (42947280).

Almost surely, 2^85894559 is an apocalyptic number.

85894559 is a deficient number, since it is larger than the sum of its proper divisors (1).

85894559 is an equidigital number, since it uses as much as digits as its factorization.

85894559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 53.

The square root of 85894559 is about 9267.9317541726. The cubic root of 85894559 is about 441.2200282456.

The spelling of 85894559 in words is "eighty-five million, eight hundred ninety-four thousand, five hundred fifty-nine".