5442253221 has 4 divisors (see below), whose sum is σ = 7256337632. Its totient is φ = 3628168812.

The previous prime is 5442253213. The next prime is 5442253249. The reversal of 5442253221 is 1223522445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5442253221 - 2³ = 5442253213 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 (5442253211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907042201 + ... + 907042206.

It is an arithmetic number, because the mean of its divisors is an integer number (1814084408).

Almost surely, 2^5442253221 is an apocalyptic number.

It is an amenable number.

5442253221 is a deficient number, since it is larger than the sum of its proper divisors (1814084411).

5442253221 is a wasteful number, since it uses less digits than its factorization.

5442253221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814084410.

The product of its digits is 19200, while the sum is 30.

The square root of 5442253221 is about 73771.6288352101. The cubic root of 5442253221 is about 1758.9746546832.

Adding to 5442253221 its reverse (1223522445), we get a palindrome (6665775666).

The spelling of 5442253221 in words is "five billion, four hundred forty-two million, two hundred fifty-three thousand, two hundred twenty-one".