530732257538 has 30 divisors (see below), whose sum is σ = 928814538249. Its totient is φ = 227435046048.

The previous prime is 530732257511. The next prime is 530732257609. The reversal of 530732257538 is 835752237035.

It can be written as a sum of positive squares in 2 ways, for example, as 272685529249 + 258046728289 = 522193^2 + 507983^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=515137.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 50478170 + ... + 50488682.

Almost surely, 2^530732257538 is an apocalyptic number.

530732257538 is a deficient number, since it is larger than the sum of its proper divisors (398082280711).

530732257538 is an frugal number, since it uses more digits than its factorization.

530732257538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21056 (or 10522 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 50.

Multiplying 530732257538 by its sum of digits (50), we get a square (26536612876900 = 5151370²).

The spelling of 530732257538 in words is "five hundred thirty billion, seven hundred thirty-two million, two hundred fifty-seven thousand, five hundred thirty-eight".