85122259 has 2 divisors, whose sum is σ = 85122260. Its totient is φ = 85122258.

The previous prime is 85122251. The next prime is 85122313. The reversal of 85122259 is 95222158.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85122259 - 2³ = 85122251 is a prime.

It is not a weakly prime, because it can be changed into another prime (85122251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42561129 + 42561130.

It is an arithmetic number, because the mean of its divisors is an integer number (42561130).

Almost surely, 2^85122259 is an apocalyptic number.

85122259 is a deficient number, since it is larger than the sum of its proper divisors (1).

85122259 is an equidigital number, since it uses as much as digits as its factorization.

85122259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 34.

The square root of 85122259 is about 9226.1725000132. The cubic root of 85122259 is about 439.8936709323.

The spelling of 85122259 in words is "eighty-five million, one hundred twenty-two thousand, two hundred fifty-nine".