513536243 has 4 divisors (see below), whose sum is σ = 560221368. Its totient is φ = 466851120.

The previous prime is 513536207. The next prime is 513536269. The reversal of 513536243 is 342635315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513536243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513536293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23342546 + ... + 23342567.

It is an arithmetic number, because the mean of its divisors is an integer number (140055342).

Almost surely, 2^513536243 is an apocalyptic number.

513536243 is a deficient number, since it is larger than the sum of its proper divisors (46685125).

513536243 is a wasteful number, since it uses less digits than its factorization.

513536243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46685124.

The product of its digits is 32400, while the sum is 32.

The square root of 513536243 is about 22661.3380672898. The cubic root of 513536243 is about 800.7993276407.

The spelling of 513536243 in words is "five hundred thirteen million, five hundred thirty-six thousand, two hundred forty-three".