523021056 has 144 divisors (see below), whose sum is σ = 1488359040. Its totient is φ = 162570240.

The previous prime is 523021021. The next prime is 523021067. The reversal of 523021056 is 650120325.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 15 ways as a sum of consecutive naturals, for example, 1064971 + ... + 1065461.

Almost surely, 2^523021056 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 523021056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744179520).

523021056 is an abundant number, since it is smaller than the sum of its proper divisors (965337984).

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

523021056 is a wasteful number, since it uses less digits than its factorization.

523021056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 523021056 is about 22869.6536047226. The cubic root of 523021056 is about 805.6994324940.

The spelling of 523021056 in words is "five hundred twenty-three million, twenty-one thousand, fifty-six".