520143 has 8 divisors (see below), whose sum is σ = 746928. Its totient is φ = 320064.

The previous prime is 520129. The next prime is 520151. The reversal of 520143 is 341025.

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

It is not a de Polignac number, because 520143 - 2⁵ = 520111 is a prime.

520143 is a modest number, since divided by 143 gives 52 as remainder.

520143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520103) 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, 6630 + ... + 6707.

It is an arithmetic number, because the mean of its divisors is an integer number (93366).

2⁵²⁰¹⁴³ is an apocalyptic number.

520143 is a deficient number, since it is larger than the sum of its proper divisors (226785).

520143 is a wasteful number, since it uses less digits than its factorization.

520143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13353.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 520143 is about 721.2094009371. The cubic root of 520143 is about 80.4218858267.

Adding to 520143 its reverse (341025), we get a palindrome (861168).

The spelling of 520143 in words is "five hundred twenty thousand, one hundred forty-three".