522730656 has 144 divisors (see below), whose sum is σ = 1705826304. Its totient is φ = 148741632.

The previous prime is 522730643. The next prime is 522730669. The reversal of 522730656 is 656037225.

It is a happy number.

522730656 is a `hidden beast` number, since 522 + 73 + 0 + 65 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (522730643) and next prime (522730669).

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a self number, because there is not a number n which added to its sum of digits gives 522730656.

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 23 ways as a sum of consecutive naturals, for example, 771790 + ... + 772466.

It is an arithmetic number, because the mean of its divisors is an integer number (11846016).

Almost surely, 2^522730656 is an apocalyptic number.

522730656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522730656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (852913152).

522730656 is an abundant number, since it is smaller than the sum of its proper divisors (1183095648).

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

522730656 is a wasteful number, since it uses less digits than its factorization.

522730656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 522730656 is about 22863.3036982847. The cubic root of 522730656 is about 805.5502871714.

The spelling of 522730656 in words is "five hundred twenty-two million, seven hundred thirty thousand, six hundred fifty-six".