522538380 has 576 divisors, whose sum is σ = 2172119040. Its totient is φ = 98537472.

The previous prime is 522538349. The next prime is 522538409. The reversal of 522538380 is 83835225.

522538380 is a `hidden beast` number, since 522 + 53 + 8 + 3 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7158024 + ... + 7158096.

It is an arithmetic number, because the mean of its divisors is an integer number (3771040).

Almost surely, 2^522538380 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 522538380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1086059520).

522538380 is an abundant number, since it is smaller than the sum of its proper divisors (1649580660).

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

522538380 is a wasteful number, since it uses less digits than its factorization.

522538380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 522538380 is about 22859.0984074176. The cubic root of 522538380 is about 805.4515065471.

The spelling of 522538380 in words is "five hundred twenty-two million, five hundred thirty-eight thousand, three hundred eighty".