553330221 has 4 divisors (see below), whose sum is σ = 737773632. Its totient is φ = 368886812.

The previous prime is 553330199. The next prime is 553330223. The reversal of 553330221 is 122033355.

It is a happy number.

553330221 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 Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 553330221 - 2⁵ = 553330189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 553330191 and 553330200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553330223) 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, 92221701 + ... + 92221706.

It is an arithmetic number, because the mean of its divisors is an integer number (184443408).

Almost surely, 2^553330221 is an apocalyptic number.

It is an amenable number.

553330221 is a deficient number, since it is larger than the sum of its proper divisors (184443411).

553330221 is a wasteful number, since it uses less digits than its factorization.

553330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184443410.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 553330221 is about 23522.9721974074. The cubic root of 553330221 is about 820.9715932278.

Adding to 553330221 its reverse (122033355), we get a palindrome (675363576).

The spelling of 553330221 in words is "five hundred fifty-three million, three hundred thirty thousand, two hundred twenty-one".