5516221 has 2 divisors, whose sum is σ = 5516222. Its totient is φ = 5516220.

The previous prime is 5516209. The next prime is 5516237. The reversal of 5516221 is 1226155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4575321 + 940900 = 2139^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 5516221 - 2⁹ = 5515709 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 5516192 and 5516201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5516261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2758110 + 2758111.

It is an arithmetic number, because the mean of its divisors is an integer number (2758111).

Almost surely, 2^5516221 is an apocalyptic number.

It is an amenable number.

5516221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5516221 is an equidigital number, since it uses as much as digits as its factorization.

5516221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 5516221 is about 2348.6636625962. The cubic root of 5516221 is about 176.6907791146.

The spelling of 5516221 in words is "five million, five hundred sixteen thousand, two hundred twenty-one".