85855556 has 12 divisors (see below), whose sum is σ = 151431168. Its totient is φ = 42589512.

The previous prime is 85855531. The next prime is 85855579. The reversal of 85855556 is 65555858.

It is a self number, because there is not a number n which added to its sum of digits gives 85855556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83996 + ... + 85011.

It is an arithmetic number, because the mean of its divisors is an integer number (12619264).

Almost surely, 2^85855556 is an apocalyptic number.

It is an amenable number.

85855556 is a deficient number, since it is larger than the sum of its proper divisors (65575612).

85855556 is a wasteful number, since it uses less digits than its factorization.

85855556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169138 (or 169136 counting only the distinct ones).

The product of its digits is 1200000, while the sum is 47.

The square root of 85855556 is about 9265.8273240979. The cubic root of 85855556 is about 441.1532350736.

It can be divided in two parts, 8585 and 5556, that added together give a palindrome (14141).

The spelling of 85855556 in words is "eighty-five million, eight hundred fifty-five thousand, five hundred fifty-six".