566221303 has 2 divisors, whose sum is σ = 566221304. Its totient is φ = 566221302.

The previous prime is 566221297. The next prime is 566221321. The reversal of 566221303 is 303122665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 566221303 - 2¹³ = 566213111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566221333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283110651 + 283110652.

It is an arithmetic number, because the mean of its divisors is an integer number (283110652).

Almost surely, 2^566221303 is an apocalyptic number.

566221303 is a deficient number, since it is larger than the sum of its proper divisors (1).

566221303 is an equidigital number, since it uses as much as digits as its factorization.

566221303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 566221303 is about 23795.4050816539. The cubic root of 566221303 is about 827.2981788004.

Adding to 566221303 its reverse (303122665), we get a palindrome (869343968).

The spelling of 566221303 in words is "five hundred sixty-six million, two hundred twenty-one thousand, three hundred three".