530630321 has 4 divisors (see below), whose sum is σ = 571448052. Its totient is φ = 489812592.

The previous prime is 530630291. The next prime is 530630339. The reversal of 530630321 is 123036035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 240405025 + 290225296 = 15505^2 + 17036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-530630321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (530630351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20408846 + ... + 20408871.

It is an arithmetic number, because the mean of its divisors is an integer number (142862013).

Almost surely, 2^530630321 is an apocalyptic number.

It is an amenable number.

530630321 is a deficient number, since it is larger than the sum of its proper divisors (40817731).

530630321 is a wasteful number, since it uses less digits than its factorization.

530630321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40817730.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 530630321 is about 23035.4144959452. The cubic root of 530630321 is about 809.5879227950.

Adding to 530630321 its reverse (123036035), we get a palindrome (653666356).

The spelling of 530630321 in words is "five hundred thirty million, six hundred thirty thousand, three hundred twenty-one".