513143269 has 4 divisors (see below), whose sum is σ = 527012044. Its totient is φ = 499274496.

The previous prime is 513143251. The next prime is 513143273. The reversal of 513143269 is 962341315.

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 447322500 + 65820769 = 21150^2 + 8113^2 .

It is a cyclic number.

It is not a de Polignac number, because 513143269 - 2¹¹ = 513141221 is a prime.

It is a super-2 number, since 2×513143269² = 526632029040012722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513143069) 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, 6934332 + ... + 6934405.

It is an arithmetic number, because the mean of its divisors is an integer number (131753011).

Almost surely, 2^513143269 is an apocalyptic number.

It is an amenable number.

513143269 is a deficient number, since it is larger than the sum of its proper divisors (13868775).

513143269 is a wasteful number, since it uses less digits than its factorization.

513143269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13868774.

The product of its digits is 19440, while the sum is 34.

The square root of 513143269 is about 22652.6658254608. The cubic root of 513143269 is about 800.5950099484.

It can be divided in two parts, 5131 and 43269, that added together give a square (48400 = 220²).

The spelling of 513143269 in words is "five hundred thirteen million, one hundred forty-three thousand, two hundred sixty-nine".