85285559 has 2 divisors, whose sum is σ = 85285560. Its totient is φ = 85285558.

The previous prime is 85285537. The next prime is 85285579. The reversal of 85285559 is 95558258.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85285559 - 2¹² = 85281463 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85285579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42642779 + 42642780.

It is an arithmetic number, because the mean of its divisors is an integer number (42642780).

Almost surely, 2^85285559 is an apocalyptic number.

85285559 is a deficient number, since it is larger than the sum of its proper divisors (1).

85285559 is an equidigital number, since it uses as much as digits as its factorization.

85285559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720000, while the sum is 47.

The square root of 85285559 is about 9235.0180833607. The cubic root of 85285559 is about 440.1747910918.

The spelling of 85285559 in words is "eighty-five million, two hundred eighty-five thousand, five hundred fifty-nine".