5533271221 has 4 divisors (see below), whose sum is σ = 5533469452. Its totient is φ = 5533072992.

The previous prime is 5533271203. The next prime is 5533271269. The reversal of 5533271221 is 1221723355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1221723355 = 5 ⋅244344671.

It can be written as a sum of positive squares in 2 ways, for example, as 2351183121 + 3182088100 = 48489^2 + 56410^2 .

It is a cyclic number.

It is not a de Polignac number, because 5533271221 - 2²³ = 5524882613 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 (5533278221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48696 + ... + 115921.

It is an arithmetic number, because the mean of its divisors is an integer number (1383367363).

Almost surely, 2^5533271221 is an apocalyptic number.

It is an amenable number.

5533271221 is a deficient number, since it is larger than the sum of its proper divisors (198231).

5533271221 is a wasteful number, since it uses less digits than its factorization.

5533271221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198230.

The product of its digits is 12600, while the sum is 31.

The square root of 5533271221 is about 74385.9611822016. The cubic root of 5533271221 is about 1768.7263780786.

Adding to 5533271221 its reverse (1221723355), we get a palindrome (6754994576).

The spelling of 5533271221 in words is "five billion, five hundred thirty-three million, two hundred seventy-one thousand, two hundred twenty-one".