5531444221 has 8 divisors (see below), whose sum is σ = 5552959104. Its totient is φ = 5509972080.

The previous prime is 5531444213. The next prime is 5531444249. The reversal of 5531444221 is 1224441355.

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 5531444221 - 2³ = 5531444213 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 (5531442221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261960 + ... + 282286.

It is an arithmetic number, because the mean of its divisors is an integer number (694119888).

Almost surely, 2^5531444221 is an apocalyptic number.

It is an amenable number.

5531444221 is a deficient number, since it is larger than the sum of its proper divisors (21514883).

5531444221 is a wasteful number, since it uses less digits than its factorization.

5531444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21371.

The product of its digits is 19200, while the sum is 31.

The square root of 5531444221 is about 74373.6796252545. The cubic root of 5531444221 is about 1768.5316880126.

Adding to 5531444221 its reverse (1224441355), we get a palindrome (6755885576).

The spelling of 5531444221 in words is "five billion, five hundred thirty-one million, four hundred forty-four thousand, two hundred twenty-one".