515130013 has 2 divisors, whose sum is σ = 515130014. Its totient is φ = 515130012.

The previous prime is 515129983. The next prime is 515130017. The reversal of 515130013 is 310031515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514518489 + 611524 = 22683^2 + 782^2 .

It is a cyclic number.

It is not a de Polignac number, because 515130013 - 2²⁵ = 481575581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515130017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257565006 + 257565007.

It is an arithmetic number, because the mean of its divisors is an integer number (257565007).

Almost surely, 2^515130013 is an apocalyptic number.

It is an amenable number.

515130013 is a deficient number, since it is larger than the sum of its proper divisors (1).

515130013 is an equidigital number, since it uses as much as digits as its factorization.

515130013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 515130013 is about 22696.4757836982. The cubic root of 515130013 is about 801.6269043392.

Adding to 515130013 its reverse (310031515), we get a palindrome (825161528).

The spelling of 515130013 in words is "five hundred fifteen million, one hundred thirty thousand, thirteen".