530730321 has 24 divisors (see below), whose sum is σ = 779358720. Its totient is φ = 321018720.

The previous prime is 530730301. The next prime is 530730337. The reversal of 530730321 is 123037035.

It is not a de Polignac number, because 530730321 - 2⁵ = 530730289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 530730291 and 530730300.

It is not an unprimeable number, because it can be changed into a prime (530730301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235920 + ... + 238158.

It is an arithmetic number, because the mean of its divisors is an integer number (32473280).

Almost surely, 2^530730321 is an apocalyptic number.

It is an amenable number.

530730321 is a deficient number, since it is larger than the sum of its proper divisors (248628399).

530730321 is a wasteful number, since it uses less digits than its factorization.

530730321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917 (or 2906 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 530730321 is about 23037.5849645747. The cubic root of 530730321 is about 809.6387765966.

Adding to 530730321 its reverse (123037035), we get a palindrome (653767356).

The spelling of 530730321 in words is "five hundred thirty million, seven hundred thirty thousand, three hundred twenty-one".