513043513 has 2 divisors, whose sum is σ = 513043514. Its totient is φ = 513043512.

The previous prime is 513043499. The next prime is 513043519. The reversal of 513043513 is 315340315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427166224 + 85877289 = 20668^2 + 9267^2 .

It is a cyclic number.

It is not a de Polignac number, because 513043513 - 2⁵ = 513043481 is a prime.

It is not a weakly prime, because it can be changed into another prime (513043519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256521756 + 256521757.

It is an arithmetic number, because the mean of its divisors is an integer number (256521757).

Almost surely, 2^513043513 is an apocalyptic number.

It is an amenable number.

513043513 is a deficient number, since it is larger than the sum of its proper divisors (1).

513043513 is an equidigital number, since it uses as much as digits as its factorization.

513043513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 513043513 is about 22650.4638583849. The cubic root of 513043513 is about 800.5431275363.

Adding to 513043513 its reverse (315340315), we get a palindrome (828383828).

The spelling of 513043513 in words is "five hundred thirteen million, forty-three thousand, five hundred thirteen".