85900559 has 2 divisors, whose sum is σ = 85900560. Its totient is φ = 85900558.

The previous prime is 85900553. The next prime is 85900567. The reversal of 85900559 is 95500958.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85900559 - 2⁴ = 85900543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85900553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42950279 + 42950280.

It is an arithmetic number, because the mean of its divisors is an integer number (42950280).

Almost surely, 2^85900559 is an apocalyptic number.

85900559 is a deficient number, since it is larger than the sum of its proper divisors (1).

85900559 is an equidigital number, since it uses as much as digits as its factorization.

85900559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 41.

The square root of 85900559 is about 9268.2554453360. The cubic root of 85900559 is about 441.2303015332.

The spelling of 85900559 in words is "eighty-five million, nine hundred thousand, five hundred fifty-nine".