513243513 has 16 divisors (see below), whose sum is σ = 761390400. Its totient is φ = 341699040.

The previous prime is 513243499. The next prime is 513243529. The reversal of 513243513 is 315342315.

It is not a de Polignac number, because 513243513 - 2⁹ = 513243001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (513243553) 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 in 15 ways as a sum of consecutive naturals, for example, 8058 + ... + 33036.

It is an arithmetic number, because the mean of its divisors is an integer number (47586900).

Almost surely, 2^513243513 is an apocalyptic number.

It is an amenable number.

513243513 is a deficient number, since it is larger than the sum of its proper divisors (248146887).

513243513 is a wasteful number, since it uses less digits than its factorization.

513243513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25749 (or 25743 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 513243513 is about 22654.8783488237. The cubic root of 513243513 is about 800.6471393929.

Adding to 513243513 its reverse (315342315), we get a palindrome (828585828).

The spelling of 513243513 in words is "five hundred thirteen million, two hundred forty-three thousand, five hundred thirteen".