555441121 has 2 divisors, whose sum is σ = 555441122. Its totient is φ = 555441120.

The previous prime is 555441097. The next prime is 555441127. The reversal of 555441121 is 121144555.

555441121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 469155600 + 86285521 = 21660^2 + 9289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-555441121 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555441121.

It is not a weakly prime, because it can be changed into another prime (555441127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277720560 + 277720561.

It is an arithmetic number, because the mean of its divisors is an integer number (277720561).

Almost surely, 2^555441121 is an apocalyptic number.

It is an amenable number.

555441121 is a deficient number, since it is larger than the sum of its proper divisors (1).

555441121 is an equidigital number, since it uses as much as digits as its factorization.

555441121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 28.

The square root of 555441121 is about 23567.7983910250. The cubic root of 555441121 is about 822.0142435910.

Adding to 555441121 its reverse (121144555), we get a palindrome (676585676).

It can be divided in two parts, 55544 and 1121, that added together give a palindrome (56665).

The spelling of 555441121 in words is "five hundred fifty-five million, four hundred forty-one thousand, one hundred twenty-one".