85975559 has 2 divisors, whose sum is σ = 85975560. Its totient is φ = 85975558.

The previous prime is 85975507. The next prime is 85975651. The reversal of 85975559 is 95557958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85975559 - 2⁸ = 85975303 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85975559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85975159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42987779 + 42987780.

It is an arithmetic number, because the mean of its divisors is an integer number (42987780).

Almost surely, 2^85975559 is an apocalyptic number.

85975559 is a deficient number, since it is larger than the sum of its proper divisors (1).

85975559 is an equidigital number, since it uses as much as digits as its factorization.

85975559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2835000, while the sum is 53.

The square root of 85975559 is about 9272.3006314506. The cubic root of 85975559 is about 441.3586772842.

The spelling of 85975559 in words is "eighty-five million, nine hundred seventy-five thousand, five hundred fifty-nine".