85244259 has 4 divisors (see below), whose sum is σ = 113659016. Its totient is φ = 56829504.

The previous prime is 85244221. The next prime is 85244261. The reversal of 85244259 is 95244258.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 85244259 - 2²³ = 76855651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85244209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14207374 + ... + 14207379.

It is an arithmetic number, because the mean of its divisors is an integer number (28414754).

Almost surely, 2^85244259 is an apocalyptic number.

85244259 is a deficient number, since it is larger than the sum of its proper divisors (28414757).

85244259 is a wasteful number, since it uses less digits than its factorization.

85244259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28414756.

The product of its digits is 115200, while the sum is 39.

The square root of 85244259 is about 9232.7817584951. The cubic root of 85244259 is about 440.1037272668.

Subtracting 85244259 from its reverse (95244258), we obtain a palindrome (9999999).

The spelling of 85244259 in words is "eighty-five million, two hundred forty-four thousand, two hundred fifty-nine".