552632221 has 2 divisors, whose sum is σ = 552632222. Its totient is φ = 552632220.

The previous prime is 552632203. The next prime is 552632231. The reversal of 552632221 is 122236255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429111225 + 123520996 = 20715^2 + 11114^2 .

It is a cyclic number.

It is not a de Polignac number, because 552632221 - 2¹¹ = 552630173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 552632221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (552632231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276316110 + 276316111.

It is an arithmetic number, because the mean of its divisors is an integer number (276316111).

Almost surely, 2^552632221 is an apocalyptic number.

It is an amenable number.

552632221 is a deficient number, since it is larger than the sum of its proper divisors (1).

552632221 is an equidigital number, since it uses as much as digits as its factorization.

552632221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 552632221 is about 23508.1309550547. The cubic root of 552632221 is about 820.6262423126.

Adding to 552632221 its reverse (122236255), we get a palindrome (674868476).

The spelling of 552632221 in words is "five hundred fifty-two million, six hundred thirty-two thousand, two hundred twenty-one".