85017259 has 2 divisors, whose sum is σ = 85017260. Its totient is φ = 85017258.

The previous prime is 85017239. The next prime is 85017263. The reversal of 85017259 is 95271058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85017259 - 2¹⁵ = 84984491 is a prime.

It is not a weakly prime, because it can be changed into another prime (85017209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42508629 + 42508630.

It is an arithmetic number, because the mean of its divisors is an integer number (42508630).

Almost surely, 2^85017259 is an apocalyptic number.

85017259 is a deficient number, since it is larger than the sum of its proper divisors (1).

85017259 is an equidigital number, since it uses as much as digits as its factorization.

85017259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 85017259 is about 9220.4804104775. The cubic root of 85017259 is about 439.7127239797.

The spelling of 85017259 in words is "eighty-five million, seventeen thousand, two hundred fifty-nine".