513243 has 8 divisors (see below), whose sum is σ = 760400. Its totient is φ = 342144.

The previous prime is 513239. The next prime is 513257. The reversal of 513243 is 342315.

It is not a de Polignac number, because 513243 - 2² = 513239 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 513243.

It is not an unprimeable number, because it can be changed into a prime (513203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9478 + ... + 9531.

It is an arithmetic number, because the mean of its divisors is an integer number (95050).

2⁵¹³²⁴³ is an apocalyptic number.

513243 is a deficient number, since it is larger than the sum of its proper divisors (247157).

513243 is a wasteful number, since it uses less digits than its factorization.

513243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19018 (or 19012 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 513243 is about 716.4097989280. The cubic root of 513243 is about 80.0646872637.

Adding to 513243 its reverse (342315), we get a palindrome (855558).

The spelling of 513243 in words is "five hundred thirteen thousand, two hundred forty-three".