520523 has 8 divisors (see below), whose sum is σ = 560592. Its totient is φ = 481536.

The previous prime is 520451. The next prime is 520529. The reversal of 520523 is 325025.

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 520523 - 2¹⁰ = 519499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520523.

It is not an unprimeable number, because it can be changed into a prime (520529) 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, 911 + ... + 1367.

It is an arithmetic number, because the mean of its divisors is an integer number (70074).

2⁵²⁰⁵²³ is an apocalyptic number.

520523 is a deficient number, since it is larger than the sum of its proper divisors (40069).

520523 is a wasteful number, since it uses less digits than its factorization.

520523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 520523 is about 721.4727992101. The cubic root of 520523 is about 80.4414656202.

Adding to 520523 its reverse (325025), we get a palindrome (845548).

The spelling of 520523 in words is "five hundred twenty thousand, five hundred twenty-three".