520743 has 8 divisors (see below), whose sum is σ = 724608. Its totient is φ = 332024.

The previous prime is 520721. The next prime is 520747. The reversal of 520743 is 347025.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 520743 - 2⁶ = 520679 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520743.

It is not an unprimeable number, because it can be changed into a prime (520747) 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, 3705 + ... + 3842.

It is an arithmetic number, because the mean of its divisors is an integer number (90576).

2⁵²⁰⁷⁴³ is an apocalyptic number.

520743 is a deficient number, since it is larger than the sum of its proper divisors (203865).

520743 is a wasteful number, since it uses less digits than its factorization.

520743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7573.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 520743 is about 721.6252490039. The cubic root of 520743 is about 80.4527969349.

Adding to 520743 its reverse (347025), we get a palindrome (867768).

The spelling of 520743 in words is "five hundred twenty thousand, seven hundred forty-three".