522189781129 has 27 divisors (see below), whose sum is σ = 559847529909. Its totient is φ = 486992787840.

The previous prime is 522189781123. The next prime is 522189781151. The reversal of 522189781129 is 921187981225.

It is a happy number.

The square root of 522189781129 is 722627.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 12039575625 + 510150205504 = 109725^2 + 714248^2 .

It is not a de Polignac number, because 522189781129 - 2⁵ = 522189781097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 522189781129.

It is not an unprimeable number, because it can be changed into a prime (522189781123) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1002283389 + ... + 1002283909.

Almost surely, 2^522189781129 is an apocalyptic number.

522189781129 is the 722627-th square number.

522189781129 is the 361314-th centered octagonal number.

It is an amenable number.

522189781129 is a deficient number, since it is larger than the sum of its proper divisors (37657748780).

522189781129 is an frugal number, since it uses more digits than its factorization.

522189781129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 613 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 55.

The spelling of 522189781129 in words is "five hundred twenty-two billion, one hundred eighty-nine million, seven hundred eighty-one thousand, one hundred twenty-nine".