566426321 has 2 divisors, whose sum is σ = 566426322. Its totient is φ = 566426320.

The previous prime is 566426293. The next prime is 566426323. The reversal of 566426321 is 123624665.

It is a happy number.

566426321 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., 550137025 + 16289296 = 23455^2 + 4036^2 .

It is a cyclic number.

It is not a de Polignac number, because 566426321 - 2⁶ = 566426257 is a prime.

Together with 566426323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (566426323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283213160 + 283213161.

It is an arithmetic number, because the mean of its divisors is an integer number (283213161).

Almost surely, 2^566426321 is an apocalyptic number.

It is an amenable number.

566426321 is a deficient number, since it is larger than the sum of its proper divisors (1).

566426321 is an equidigital number, since it uses as much as digits as its factorization.

566426321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 35.

The square root of 566426321 is about 23799.7126243154. The cubic root of 566426321 is about 827.3980164141.

The spelling of 566426321 in words is "five hundred sixty-six million, four hundred twenty-six thousand, three hundred twenty-one".