554221 has 4 divisors (see below), whose sum is σ = 564732. Its totient is φ = 543712.

The previous prime is 554209. The next prime is 554233. The reversal of 554221 is 122455.

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

It is an interprime number because it is at equal distance from previous prime (554209) and next prime (554233).

It can be written as a sum of positive squares in 2 ways, for example, as 455625 + 98596 = 675^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 554221 - 2⁵ = 554189 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5176 + ... + 5281.

It is an arithmetic number, because the mean of its divisors is an integer number (141183).

2⁵⁵⁴²²¹ is an apocalyptic number.

It is an amenable number.

554221 is a deficient number, since it is larger than the sum of its proper divisors (10511).

554221 is a wasteful number, since it uses less digits than its factorization.

554221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10510.

The product of its digits is 400, while the sum is 19.

The square root of 554221 is about 744.4602071300. The cubic root of 554221 is about 82.1411904244.

Adding to 554221 its reverse (122455), we get a palindrome (676676).

The spelling of 554221 in words is "five hundred fifty-four thousand, two hundred twenty-one".