520753 has 4 divisors (see below), whose sum is σ = 538740. Its totient is φ = 502768.

The previous prime is 520747. The next prime is 520759. The reversal of 520753 is 357025.

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

It is an interprime number because it is at equal distance from previous prime (520747) and next prime (520759).

It can be written as a sum of positive squares in 2 ways, for example, as 446224 + 74529 = 668^2 + 273^2 .

It is a cyclic number.

It is not a de Polignac number, because 520753 - 2⁵ = 520721 is a prime.

It is a super-3 number, since 3×520753³ = 423659155682993331, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8950 + ... + 9007.

It is an arithmetic number, because the mean of its divisors is an integer number (134685).

2⁵²⁰⁷⁵³ is an apocalyptic number.

It is an amenable number.

520753 is a deficient number, since it is larger than the sum of its proper divisors (17987).

520753 is a wasteful number, since it uses less digits than its factorization.

520753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17986.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 520753 is about 721.6321777748. The cubic root of 520753 is about 80.4533119188.

Adding to 520753 its reverse (357025), we get a palindrome (877778).

The spelling of 520753 in words is "five hundred twenty thousand, seven hundred fifty-three".