5355224221 has 4 divisors (see below), whose sum is σ = 5443014844. Its totient is φ = 5267433600.

The previous prime is 5355224219. The next prime is 5355224243. The reversal of 5355224221 is 1224225535.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2329124121 + 3026100100 = 48261^2 + 55010^2 .

It is a cyclic number.

It is not a de Polignac number, because 5355224221 - 2¹ = 5355224219 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 (5355224821) 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 3 ways as a sum of consecutive naturals, for example, 43895220 + ... + 43895341.

It is an arithmetic number, because the mean of its divisors is an integer number (1360753711).

Almost surely, 2^5355224221 is an apocalyptic number.

It is an amenable number.

5355224221 is a deficient number, since it is larger than the sum of its proper divisors (87790623).

5355224221 is an equidigital number, since it uses as much as digits as its factorization.

5355224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87790622.

The product of its digits is 24000, while the sum is 31.

The square root of 5355224221 is about 73179.3975173341. The cubic root of 5355224221 is about 1749.5480978461.

Adding to 5355224221 its reverse (1224225535), we get a palindrome (6579449756).

The spelling of 5355224221 in words is "five billion, three hundred fifty-five million, two hundred twenty-four thousand, two hundred twenty-one".