544202221 has 2 divisors, whose sum is σ = 544202222. Its totient is φ = 544202220.

The previous prime is 544202209. The next prime is 544202257. The reversal of 544202221 is 122202445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278055625 + 266146596 = 16675^2 + 16314^2 .

It is a cyclic number.

It is not a de Polignac number, because 544202221 - 2⁷ = 544202093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 544202192 and 544202201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544202201) 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, 272101110 + 272101111.

It is an arithmetic number, because the mean of its divisors is an integer number (272101111).

Almost surely, 2^544202221 is an apocalyptic number.

It is an amenable number.

544202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

544202221 is an equidigital number, since it uses as much as digits as its factorization.

544202221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 544202221 is about 23328.1422535100. The cubic root of 544202221 is about 816.4321593691.

Adding to 544202221 its reverse (122202445), we get a palindrome (666404666).

The spelling of 544202221 in words is "five hundred forty-four million, two hundred two thousand, two hundred twenty-one".