522649260 has 216 divisors, whose sum is σ = 1884748320. Its totient is φ = 119252736.

The previous prime is 522649249. The next prime is 522649261. The reversal of 522649260 is 62946225.

522649260 is a `hidden beast` number, since 5 + 2 + 2 + 649 + 2 + 6 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (522649261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 918256 + ... + 918824.

Almost surely, 2^522649260 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 522649260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942374160).

522649260 is an abundant number, since it is smaller than the sum of its proper divisors (1362099060).

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

522649260 is an equidigital number, since it uses as much as digits as its factorization.

522649260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 522649260 is about 22861.5235712758. The cubic root of 522649260 is about 805.5084734292.

The spelling of 522649260 in words is "five hundred twenty-two million, six hundred forty-nine thousand, two hundred sixty".