522044820 has 144 divisors (see below), whose sum is σ = 1742569920. Its totient is φ = 126498240.

The previous prime is 522044819. The next prime is 522044821. The reversal of 522044820 is 28440225.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (522044819) and next prime (522044821).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522044821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 238491 + ... + 240669.

It is an arithmetic number, because the mean of its divisors is an integer number (12101180).

Almost surely, 2^522044820 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 522044820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (871284960).

522044820 is an abundant number, since it is smaller than the sum of its proper divisors (1220525100).

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

522044820 is a wasteful number, since it uses less digits than its factorization.

522044820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227 (or 2200 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 522044820 is about 22848.3001555914. The cubic root of 522044820 is about 805.1978321181.

The spelling of 522044820 in words is "five hundred twenty-two million, forty-four thousand, eight hundred twenty".