85801244 has 24 divisors (see below), whose sum is σ = 159980688. Its totient is φ = 40124160.

The previous prime is 85801231. The next prime is 85801259. The reversal of 85801244 is 44210858.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 85801244.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7214 + ... + 14954.

It is an arithmetic number, because the mean of its divisors is an integer number (6665862).

Almost surely, 2^85801244 is an apocalyptic number.

It is an amenable number.

85801244 is a deficient number, since it is larger than the sum of its proper divisors (74179444).

85801244 is a wasteful number, since it uses less digits than its factorization.

85801244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7925 (or 7923 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 85801244 is about 9262.8960913960. The cubic root of 85801244 is about 441.0601913238.

The spelling of 85801244 in words is "eighty-five million, eight hundred one thousand, two hundred forty-four".