572321 has 2 divisors, whose sum is σ = 572322. Its totient is φ = 572320.

The previous prime is 572311. The next prime is 572323. The reversal of 572321 is 123275.

572321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 541696 + 30625 = 736^2 + 175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-572321 is a prime.

It is a Sophie Germain prime.

Together with 572323, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 572293 and 572302.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 572321.

It is not a weakly prime, because it can be changed into another prime (572323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286160 + 286161.

It is an arithmetic number, because the mean of its divisors is an integer number (286161).

2⁵⁷²³²¹ is an apocalyptic number.

It is an amenable number.

572321 is a deficient number, since it is larger than the sum of its proper divisors (1).

572321 is an equidigital number, since it uses as much as digits as its factorization.

572321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 20.

The square root of 572321 is about 756.5190017442. The cubic root of 572321 is about 83.0258302535.

Adding to 572321 its reverse (123275), we get a palindrome (695596).

The spelling of 572321 in words is "five hundred seventy-two thousand, three hundred twenty-one".