85281659 has 2 divisors, whose sum is σ = 85281660. Its totient is φ = 85281658.

The previous prime is 85281619. The next prime is 85281683. The reversal of 85281659 is 95618258.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85281659 is a prime.

It is a super-2 number, since 2×85281659² = 14545922723584562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85281619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42640829 + 42640830.

It is an arithmetic number, because the mean of its divisors is an integer number (42640830).

Almost surely, 2^85281659 is an apocalyptic number.

85281659 is a deficient number, since it is larger than the sum of its proper divisors (1).

85281659 is an equidigital number, since it uses as much as digits as its factorization.

85281659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 44.

The square root of 85281659 is about 9234.8069281388. The cubic root of 85281659 is about 440.1680814453.

The spelling of 85281659 in words is "eighty-five million, two hundred eighty-one thousand, six hundred fifty-nine".