850521056 has 96 divisors (see below), whose sum is σ = 2138814720. Its totient is φ = 323251200.

The previous prime is 850521047. The next prime is 850521079. The reversal of 850521056 is 650125058.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96815 + ... + 105233.

It is an arithmetic number, because the mean of its divisors is an integer number (22279320).

Almost surely, 2^850521056 is an apocalyptic number.

850521056 is the 16838-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 850521056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069407360).

850521056 is an abundant number, since it is smaller than the sum of its proper divisors (1288293664).

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

850521056 is a wasteful number, since it uses less digits than its factorization.

850521056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488 (or 8480 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 850521056 is about 29163.6941418607. The cubic root of 850521056 is about 947.4617583533.

The spelling of 850521056 in words is "eight hundred fifty million, five hundred twenty-one thousand, fifty-six".