513143263 has 4 divisors (see below), whose sum is σ = 513199008. Its totient is φ = 513087520.

The previous prime is 513143251. The next prime is 513143273. The reversal of 513143263 is 362341315.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 513143263 - 2⁵ = 513143231 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 (513143233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10423 + ... + 33688.

It is an arithmetic number, because the mean of its divisors is an integer number (128299752).

Almost surely, 2^513143263 is an apocalyptic number.

513143263 is a deficient number, since it is larger than the sum of its proper divisors (55745).

513143263 is a wasteful number, since it uses less digits than its factorization.

513143263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55744.

The product of its digits is 6480, while the sum is 28.

The square root of 513143263 is about 22652.6656930261. The cubic root of 513143263 is about 800.5950068280.

Adding to 513143263 its reverse (362341315), we get a palindrome (875484578).

The spelling of 513143263 in words is "five hundred thirteen million, one hundred forty-three thousand, two hundred sixty-three".