850055000 has 80 divisors (see below), whose sum is σ = 2004108480. Its totient is φ = 337904000.

The previous prime is 850054987. The next prime is 850055021. The reversal of 850055000 is 550058.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 984569 + ... + 985431.

It is an arithmetic number, because the mean of its divisors is an integer number (25051356).

Almost surely, 2^850055000 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 850055000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002054240).

850055000 is an abundant number, since it is smaller than the sum of its proper divisors (1154053480).

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

850055000 is a wasteful number, since it uses less digits than its factorization.

850055000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1067 counting only the distinct ones).

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

The square root of 850055000 is about 29155.7027011869. The cubic root of 850055000 is about 947.2886680210.

The spelling of 850055000 in words is "eight hundred fifty million, fifty-five thousand".