554045221 has 2 divisors, whose sum is σ = 554045222. Its totient is φ = 554045220.

The previous prime is 554045201. The next prime is 554045227. The reversal of 554045221 is 122540455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553896225 + 148996 = 23535^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 554045221 - 2¹⁷ = 553914149 is a prime.

It is a super-2 number, since 2×554045221² = 613932213825877682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 554045221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554045227) 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 as a sum of consecutive naturals, namely, 277022610 + 277022611.

It is an arithmetic number, because the mean of its divisors is an integer number (277022611).

Almost surely, 2^554045221 is an apocalyptic number.

It is an amenable number.

554045221 is a deficient number, since it is larger than the sum of its proper divisors (1).

554045221 is an equidigital number, since it uses as much as digits as its factorization.

554045221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 554045221 is about 23538.1652003719. The cubic root of 554045221 is about 821.3250542743.

Adding to 554045221 its reverse (122540455), we get a palindrome (676585676).

The spelling of 554045221 in words is "five hundred fifty-four million, forty-five thousand, two hundred twenty-one".