552221 has 4 divisors (see below), whose sum is σ = 558012. Its totient is φ = 546432.

The previous prime is 552217. The next prime is 552239. The reversal of 552221 is 122255.

552221 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.

It can be written as a sum of positive squares in 2 ways, for example, as 148996 + 403225 = 386^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 552221 - 2² = 552217 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 552221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552241) 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, 2750 + ... + 2943.

It is an arithmetic number, because the mean of its divisors is an integer number (139503).

2⁵⁵²²²¹ is an apocalyptic number.

It is an amenable number.

552221 is a deficient number, since it is larger than the sum of its proper divisors (5791).

552221 is an equidigital number, since it uses as much as digits as its factorization.

552221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790.

The product of its digits is 200, while the sum is 17.

The square root of 552221 is about 743.1157379574. The cubic root of 552221 is about 82.0422645497.

Adding to 552221 its reverse (122255), we get a palindrome (674476).

The spelling of 552221 in words is "five hundred fifty-two thousand, two hundred twenty-one".