513532213 has 4 divisors (see below), whose sum is σ = 527411500. Its totient is φ = 499652928.

The previous prime is 513532193. The next prime is 513532223. The reversal of 513532213 is 312235315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 400280049 + 113252164 = 20007^2 + 10642^2 .

It is a cyclic number.

It is not a de Polignac number, because 513532213 - 2⁹ = 513531701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513532223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6939588 + ... + 6939661.

It is an arithmetic number, because the mean of its divisors is an integer number (131852875).

Almost surely, 2^513532213 is an apocalyptic number.

It is an amenable number.

513532213 is a deficient number, since it is larger than the sum of its proper divisors (13879287).

513532213 is a wasteful number, since it uses less digits than its factorization.

513532213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13879286.

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

The square root of 513532213 is about 22661.2491491533. The cubic root of 513532213 is about 800.7972328650.

Adding to 513532213 its reverse (312235315), we get a palindrome (825767528).

The spelling of 513532213 in words is "five hundred thirteen million, five hundred thirty-two thousand, two hundred thirteen".