5534561221 has 8 divisors (see below), whose sum is σ = 6454299200. Its totient is φ = 4743909324.

The previous prime is 5534561203. The next prime is 5534561237. The reversal of 5534561221 is 1221654355.

It is not a de Polignac number, because 5534561221 - 2²⁵ = 5501006789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5534561251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8067531 + ... + 8068216.

It is an arithmetic number, because the mean of its divisors is an integer number (806787400).

Almost surely, 2^5534561221 is an apocalyptic number.

It is an amenable number.

5534561221 is a deficient number, since it is larger than the sum of its proper divisors (919737979).

5534561221 is an equidigital number, since it uses as much as digits as its factorization.

5534561221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16135768 (or 16135754 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 5534561221 is about 74394.6316678831. The cubic root of 5534561221 is about 1768.8638181599.

The spelling of 5534561221 in words is "five billion, five hundred thirty-four million, five hundred sixty-one thousand, two hundred twenty-one".