85213259 has 2 divisors, whose sum is σ = 85213260. Its totient is φ = 85213258.

The previous prime is 85213243. The next prime is 85213267. The reversal of 85213259 is 95231258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85213259 - 2⁴ = 85213243 is a prime.

It is a super-2 number, since 2×85213259² = 14522599018802162, 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 (85213159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42606629 + 42606630.

It is an arithmetic number, because the mean of its divisors is an integer number (42606630).

Almost surely, 2^85213259 is an apocalyptic number.

85213259 is a deficient number, since it is larger than the sum of its proper divisors (1).

85213259 is an equidigital number, since it uses as much as digits as its factorization.

85213259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 85213259 is about 9231.1028051907. The cubic root of 85213259 is about 440.0503712994.

The spelling of 85213259 in words is "eighty-five million, two hundred thirteen thousand, two hundred fifty-nine".