512321 has 2 divisors, whose sum is σ = 512322. Its totient is φ = 512320.

The previous prime is 512311. The next prime is 512333. The reversal of 512321 is 123215.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297025 + 215296 = 545^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 512321 - 2¹⁰ = 511297 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 512296 and 512305.

It is not a weakly prime, because it can be changed into another prime (512311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256160 + 256161.

It is an arithmetic number, because the mean of its divisors is an integer number (256161).

2⁵¹²³²¹ is an apocalyptic number.

It is an amenable number.

512321 is a deficient number, since it is larger than the sum of its proper divisors (1).

512321 is an equidigital number, since it uses as much as digits as its factorization.

512321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60, while the sum is 14.

The square root of 512321 is about 715.7660232227. The cubic root of 512321 is about 80.0167152573.

Adding to 512321 its reverse (123215), we get a palindrome (635536).

The spelling of 512321 in words is "five hundred twelve thousand, three hundred twenty-one".