513255161 has 2 divisors, whose sum is σ = 513255162. Its totient is φ = 513255160.

The previous prime is 513255073. The next prime is 513255203. The reversal of 513255161 is 161552315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487040761 + 26214400 = 22069^2 + 5120^2 .

It is a cyclic number.

It is not a de Polignac number, because 513255161 - 2¹⁸ = 512993017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (513255461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256627580 + 256627581.

It is an arithmetic number, because the mean of its divisors is an integer number (256627581).

Almost surely, 2^513255161 is an apocalyptic number.

It is an amenable number.

513255161 is a deficient number, since it is larger than the sum of its proper divisors (1).

513255161 is an equidigital number, since it uses as much as digits as its factorization.

513255161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500, while the sum is 29.

The square root of 513255161 is about 22655.1354222393. The cubic root of 513255161 is about 800.6531962107.

The spelling of 513255161 in words is "five hundred thirteen million, two hundred fifty-five thousand, one hundred sixty-one".