550304539921 has 2 divisors, whose sum is σ = 550304539922. Its totient is φ = 550304539920.

The previous prime is 550304539861. The next prime is 550304539927. The reversal of 550304539921 is 129935403055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547570400400 + 2734139521 = 739980^2 + 52289^2 .

It is a cyclic number.

It is not a de Polignac number, because 550304539921 - 2⁷ = 550304539793 is a prime.

It is not a weakly prime, because it can be changed into another prime (550304539927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275152269960 + 275152269961.

It is an arithmetic number, because the mean of its divisors is an integer number (275152269961).

Almost surely, 2^550304539921 is an apocalyptic number.

It is an amenable number.

550304539921 is a deficient number, since it is larger than the sum of its proper divisors (1).

550304539921 is an equidigital number, since it uses as much as digits as its factorization.

550304539921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729000, while the sum is 46.

The spelling of 550304539921 in words is "five hundred fifty billion, three hundred four million, five hundred thirty-nine thousand, nine hundred twenty-one".