530243110521 has 20 divisors (see below), whose sum is σ = 797136748452. Its totient is φ = 351243835488.

The previous prime is 530243110471. The next prime is 530243110669. The reversal of 530243110521 is 125011342035.

530243110521 is a `hidden beast` number, since 5 + 3 + 0 + 24 + 3 + 110 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 376794634896 + 153448475625 = 613836^2 + 391725^2 .

It is not a de Polignac number, because 530243110521 - 2⁶ = 530243110457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (530243110721) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20835090 + ... + 20860523.

Almost surely, 2^530243110521 is an apocalyptic number.

It is an amenable number.

530243110521 is a deficient number, since it is larger than the sum of its proper divisors (266893637931).

530243110521 is a wasteful number, since it uses less digits than its factorization.

530243110521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41695782 (or 41695773 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 530243110521 its reverse (125011342035), we get a palindrome (655254452556).

The spelling of 530243110521 in words is "five hundred thirty billion, two hundred forty-three million, one hundred ten thousand, five hundred twenty-one".