5535221 has 2 divisors, whose sum is σ = 5535222. Its totient is φ = 5535220.

The previous prime is 5535199. The next prime is 5535223. The reversal of 5535221 is 1225355.

5535221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5354596 + 180625 = 2314^2 + 425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5535221 is a prime.

Together with 5535223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5535223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2767610 + 2767611.

It is an arithmetic number, because the mean of its divisors is an integer number (2767611).

Almost surely, 2^5535221 is an apocalyptic number.

It is an amenable number.

5535221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5535221 is an equidigital number, since it uses as much as digits as its factorization.

5535221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 23.

The square root of 5535221 is about 2352.7050388861. The cubic root of 5535221 is about 176.8934104540.

The spelling of 5535221 in words is "five million, five hundred thirty-five thousand, two hundred twenty-one".