6559221 has 8 divisors (see below), whose sum is σ = 8959104. Its totient is φ = 4266080.

The previous prime is 6559219. The next prime is 6559253. The reversal of 6559221 is 1229556.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6559221 - 2¹ = 6559219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6559261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26541 + ... + 26786.

It is an arithmetic number, because the mean of its divisors is an integer number (1119888).

Almost surely, 2^6559221 is an apocalyptic number.

It is an amenable number.

6559221 is a deficient number, since it is larger than the sum of its proper divisors (2399883).

6559221 is a wasteful number, since it uses less digits than its factorization.

6559221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53371.

The product of its digits is 5400, while the sum is 30.

The square root of 6559221 is about 2561.0976162575. The cubic root of 6559221 is about 187.1906222474.

The spelling of 6559221 in words is "six million, five hundred fifty-nine thousand, two hundred twenty-one".