550124221 has 2 divisors, whose sum is σ = 550124222. Its totient is φ = 550124220.

The previous prime is 550124209. The next prime is 550124243. The reversal of 550124221 is 122421055.

550124221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (550124243) can be obtained adding 550124221 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353816100 + 196308121 = 18810^2 + 14011^2 .

It is a cyclic number.

It is not a de Polignac number, because 550124221 - 2¹⁵ = 550091453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 550124192 and 550124201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550124021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275062110 + 275062111.

It is an arithmetic number, because the mean of its divisors is an integer number (275062111).

Almost surely, 2^550124221 is an apocalyptic number.

It is an amenable number.

550124221 is a deficient number, since it is larger than the sum of its proper divisors (1).

550124221 is an equidigital number, since it uses as much as digits as its factorization.

550124221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 550124221 is about 23454.7270502131. The cubic root of 550124221 is about 819.3829489317.

Adding to 550124221 its reverse (122421055), we get a palindrome (672545276).

The spelling of 550124221 in words is "five hundred fifty million, one hundred twenty-four thousand, two hundred twenty-one".