551322320513 has 2 divisors, whose sum is σ = 551322320514. Its totient is φ = 551322320512.

The previous prime is 551322320491. The next prime is 551322320543. The reversal of 551322320513 is 315023223155.

551322320513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416763207184 + 134559113329 = 645572^2 + 366823^2 .

It is a cyclic number.

It is not a de Polignac number, because 551322320513 - 2¹⁰ = 551322319489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551322320513.

It is not a weakly prime, because it can be changed into another prime (551322320543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275661160256 + 275661160257.

It is an arithmetic number, because the mean of its divisors is an integer number (275661160257).

Almost surely, 2^551322320513 is an apocalyptic number.

It is an amenable number.

551322320513 is a deficient number, since it is larger than the sum of its proper divisors (1).

551322320513 is an equidigital number, since it uses as much as digits as its factorization.

551322320513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 551322320513 its reverse (315023223155), we get a palindrome (866345543668).

The spelling of 551322320513 in words is "five hundred fifty-one billion, three hundred twenty-two million, three hundred twenty thousand, five hundred thirteen".