566242221 has 8 divisors (see below), whose sum is σ = 787815360. Its totient is φ = 361081952.

The previous prime is 566242219. The next prime is 566242223. The reversal of 566242221 is 122242665.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (566242219) and next prime (566242223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 566242221 - 2¹ = 566242219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566242223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4103136 + ... + 4103273.

It is an arithmetic number, because the mean of its divisors is an integer number (98476920).

Almost surely, 2^566242221 is an apocalyptic number.

It is an amenable number.

566242221 is a deficient number, since it is larger than the sum of its proper divisors (221573139).

566242221 is a wasteful number, since it uses less digits than its factorization.

566242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8206435.

The product of its digits is 11520, while the sum is 30.

The square root of 566242221 is about 23795.8446162350. The cubic root of 566242221 is about 827.3083663425.

Adding to 566242221 its reverse (122242665), we get a palindrome (688484886).

The spelling of 566242221 in words is "five hundred sixty-six million, two hundred forty-two thousand, two hundred twenty-one".