520513343 has 8 divisors (see below), whose sum is σ = 614062080. Its totient is φ = 431762040.

The previous prime is 520513333. The next prime is 520513381. The reversal of 520513343 is 343315025.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520513343 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520513333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199123 + ... + 1199556.

It is an arithmetic number, because the mean of its divisors is an integer number (76757760).

Almost surely, 2^520513343 is an apocalyptic number.

520513343 is a deficient number, since it is larger than the sum of its proper divisors (93548737).

520513343 is a wasteful number, since it uses less digits than its factorization.

520513343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398717.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 520513343 is about 22814.7615152997. The cubic root of 520513343 is about 804.4096815382.

Adding to 520513343 its reverse (343315025), we get a palindrome (863828368).

The spelling of 520513343 in words is "five hundred twenty million, five hundred thirteen thousand, three hundred forty-three".