552042221 has 2 divisors, whose sum is σ = 552042222. Its totient is φ = 552042220.

The previous prime is 552042209. The next prime is 552042247. The reversal of 552042221 is 122240255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 536154025 + 15888196 = 23155^2 + 3986^2 .

It is a cyclic number.

It is not a de Polignac number, because 552042221 - 2¹⁰ = 552041197 is a prime.

It is a super-2 number, since 2×552042221² = 609501227533225682, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (552042721) 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, 276021110 + 276021111.

It is an arithmetic number, because the mean of its divisors is an integer number (276021111).

Almost surely, 2^552042221 is an apocalyptic number.

It is an amenable number.

552042221 is a deficient number, since it is larger than the sum of its proper divisors (1).

552042221 is an equidigital number, since it uses as much as digits as its factorization.

552042221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 552042221 is about 23495.5787543104. The cubic root of 552042221 is about 820.3340999260.

Adding to 552042221 its reverse (122240255), we get a palindrome (674282476).

The spelling of 552042221 in words is "five hundred fifty-two million, forty-two thousand, two hundred twenty-one".