574218221 has 2 divisors, whose sum is σ = 574218222. Its totient is φ = 574218220.

The previous prime is 574218199. The next prime is 574218263. The reversal of 574218221 is 122812475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444577225 + 129640996 = 21085^2 + 11386^2 .

It is a cyclic number.

It is not a de Polignac number, because 574218221 - 2¹⁸ = 573956077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (574218521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287109110 + 287109111.

It is an arithmetic number, because the mean of its divisors is an integer number (287109111).

Almost surely, 2^574218221 is an apocalyptic number.

It is an amenable number.

574218221 is a deficient number, since it is larger than the sum of its proper divisors (1).

574218221 is an equidigital number, since it uses as much as digits as its factorization.

574218221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 32.

The square root of 574218221 is about 23962.8508529348. The cubic root of 574218221 is about 831.1747149033.

The spelling of 574218221 in words is "five hundred seventy-four million, two hundred eighteen thousand, two hundred twenty-one".