553413221 has 4 divisors (see below), whose sum is σ = 553460652. Its totient is φ = 553365792.

The previous prime is 553413197. The next prime is 553413241. The reversal of 553413221 is 122314355.

It is a happy number.

553413221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 276856321 + 276556900 = 16639^2 + 16630^2 .

It is a cyclic number.

It is not a de Polignac number, because 553413221 - 2¹⁸ = 553151077 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 (553413241) 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, 7361 + ... + 34073.

It is an arithmetic number, because the mean of its divisors is an integer number (138365163).

Almost surely, 2^553413221 is an apocalyptic number.

It is an amenable number.

553413221 is a deficient number, since it is larger than the sum of its proper divisors (47431).

553413221 is a wasteful number, since it uses less digits than its factorization.

553413221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47430.

The product of its digits is 3600, while the sum is 26.

The square root of 553413221 is about 23524.7363640913. The cubic root of 553413221 is about 821.0126399860.

Adding to 553413221 its reverse (122314355), we get a palindrome (675727576).

The spelling of 553413221 in words is "five hundred fifty-three million, four hundred thirteen thousand, two hundred twenty-one".