5566534221 has 24 divisors (see below), whose sum is σ = 7773498880. Its totient is φ = 3542939136.

The previous prime is 5566534217. The next prime is 5566534241. The reversal of 5566534221 is 1224356655.

It is not a de Polignac number, because 5566534221 - 2² = 5566534217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5566534221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5566534241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 912660 + ... + 918738.

Almost surely, 2^5566534221 is an apocalyptic number.

It is an amenable number.

5566534221 is a deficient number, since it is larger than the sum of its proper divisors (2206964659).

5566534221 is a wasteful number, since it uses less digits than its factorization.

5566534221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705 (or 6682 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 5566534221 is about 74609.2100279852. The cubic root of 5566534221 is about 1772.2635049378.

The spelling of 5566534221 in words is "five billion, five hundred sixty-six million, five hundred thirty-four thousand, two hundred twenty-one".