85159229 has 2 divisors, whose sum is σ = 85159230. Its totient is φ = 85159228.

The previous prime is 85159223. The next prime is 85159241. The reversal of 85159229 is 92295158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44582329 + 40576900 = 6677^2 + 6370^2 .

It is a cyclic number.

It is not a de Polignac number, because 85159229 - 2⁸ = 85158973 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 (85159223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42579614 + 42579615.

It is an arithmetic number, because the mean of its divisors is an integer number (42579615).

Almost surely, 2^85159229 is an apocalyptic number.

It is an amenable number.

85159229 is a deficient number, since it is larger than the sum of its proper divisors (1).

85159229 is an equidigital number, since it uses as much as digits as its factorization.

85159229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 41.

The square root of 85159229 is about 9228.1758219054. The cubic root of 85159229 is about 439.9573460718.

The spelling of 85159229 in words is "eighty-five million, one hundred fifty-nine thousand, two hundred twenty-nine".