550256513 has 2 divisors, whose sum is σ = 550256514. Its totient is φ = 550256512.

The previous prime is 550256491. The next prime is 550256521. The reversal of 550256513 is 315652055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 548871184 + 1385329 = 23428^2 + 1177^2 .

It is a cyclic number.

It is not a de Polignac number, because 550256513 - 2⁸ = 550256257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 550256513.

It is not a weakly prime, because it can be changed into another prime (550256593) 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, 275128256 + 275128257.

It is an arithmetic number, because the mean of its divisors is an integer number (275128257).

Almost surely, 2^550256513 is an apocalyptic number.

It is an amenable number.

550256513 is a deficient number, since it is larger than the sum of its proper divisors (1).

550256513 is an equidigital number, since it uses as much as digits as its factorization.

550256513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 550256513 is about 23457.5470371478. The cubic root of 550256513 is about 819.4486244749.

The spelling of 550256513 in words is "five hundred fifty million, two hundred fifty-six thousand, five hundred thirteen".