5649221 has 2 divisors, whose sum is σ = 5649222. Its totient is φ = 5649220.

The previous prime is 5649187. The next prime is 5649307. The reversal of 5649221 is 1229465.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3441025 + 2208196 = 1855^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 5649221 - 2⁶ = 5649157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5649121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2824610 + 2824611.

It is an arithmetic number, because the mean of its divisors is an integer number (2824611).

Almost surely, 2^5649221 is an apocalyptic number.

It is an amenable number.

5649221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5649221 is an equidigital number, since it uses as much as digits as its factorization.

5649221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 5649221 is about 2376.8089952708. The cubic root of 5649221 is about 178.0995634551.

The spelling of 5649221 in words is "five million, six hundred forty-nine thousand, two hundred twenty-one".