85005500 has 48 divisors (see below), whose sum is σ = 186810624. Its totient is φ = 33790400.

The previous prime is 85005461. The next prime is 85005511. The reversal of 85005500 is 550058.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 98069 + ... + 98931.

It is an arithmetic number, because the mean of its divisors is an integer number (3891888).

Almost surely, 2^85005500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85005500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93405312).

85005500 is an abundant number, since it is smaller than the sum of its proper divisors (101805124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85005500 is a wasteful number, since it uses less digits than its factorization.

85005500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 85005500 is about 9219.8427318474. The cubic root of 85005500 is about 439.6924503694.

Adding to 85005500 its reverse (550058), we get a palindrome (85555558).

The spelling of 85005500 in words is "eighty-five million, five thousand, five hundred".