513344521 has 8 divisors (see below), whose sum is σ = 536241024. Its totient is φ = 490496160.

The previous prime is 513344479. The next prime is 513344551. The reversal of 513344521 is 125443315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 513344521 - 2²⁷ = 379126793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513344521.

It is not an unprimeable number, because it can be changed into a prime (513344551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10701 + ... + 33781.

It is an arithmetic number, because the mean of its divisors is an integer number (67030128).

Almost surely, 2^513344521 is an apocalyptic number.

It is an amenable number.

513344521 is a deficient number, since it is larger than the sum of its proper divisors (22896503).

513344521 is a wasteful number, since it uses less digits than its factorization.

513344521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24071.

The product of its digits is 7200, while the sum is 28.

The square root of 513344521 is about 22657.1075161857. The cubic root of 513344521 is about 800.6996592719.

Adding to 513344521 its reverse (125443315), we get a palindrome (638787836).

It can be divided in two parts, 51334 and 4521, that added together give a palindrome (55855).

The spelling of 513344521 in words is "five hundred thirteen million, three hundred forty-four thousand, five hundred twenty-one".