85887559 has 2 divisors, whose sum is σ = 85887560. Its totient is φ = 85887558.

The previous prime is 85887547. The next prime is 85887563. The reversal of 85887559 is 95578858.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85887559 - 2¹¹ = 85885511 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 (85887059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42943779 + 42943780.

It is an arithmetic number, because the mean of its divisors is an integer number (42943780).

Almost surely, 2^85887559 is an apocalyptic number.

85887559 is a deficient number, since it is larger than the sum of its proper divisors (1).

85887559 is an equidigital number, since it uses as much as digits as its factorization.

85887559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032000, while the sum is 55.

The square root of 85887559 is about 9267.5541001928. The cubic root of 85887559 is about 441.2080421387.

The spelling of 85887559 in words is "eighty-five million, eight hundred eighty-seven thousand, five hundred fifty-nine".