573536221 has 2 divisors, whose sum is σ = 573536222. Its totient is φ = 573536220.

The previous prime is 573536143. The next prime is 573536231. The reversal of 573536221 is 122635375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399560121 + 173976100 = 19989^2 + 13190^2 .

It is a cyclic number.

It is not a de Polignac number, because 573536221 - 2¹¹ = 573534173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (573536231) 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, 286768110 + 286768111.

It is an arithmetic number, because the mean of its divisors is an integer number (286768111).

Almost surely, 2^573536221 is an apocalyptic number.

It is an amenable number.

573536221 is a deficient number, since it is larger than the sum of its proper divisors (1).

573536221 is an equidigital number, since it uses as much as digits as its factorization.

573536221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 34.

The square root of 573536221 is about 23948.6162648283. The cubic root of 573536221 is about 830.8455219800.

The spelling of 573536221 in words is "five hundred seventy-three million, five hundred thirty-six thousand, two hundred twenty-one".