520051 has 4 divisors (see below), whose sum is σ = 594352. Its totient is φ = 445752.

The previous prime is 520043. The next prime is 520063. The reversal of 520051 is 150025.

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

It is a cyclic number.

It is not a de Polignac number, because 520051 - 2³ = 520043 is a prime.

It is a Duffinian number.

520051 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (520021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37140 + ... + 37153.

It is an arithmetic number, because the mean of its divisors is an integer number (148588).

2⁵²⁰⁰⁵¹ is an apocalyptic number.

520051 is a deficient number, since it is larger than the sum of its proper divisors (74301).

520051 is an equidigital number, since it uses as much as digits as its factorization.

520051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74300.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 520051 is about 721.1456163633. The cubic root of 520051 is about 80.4171440219.

Adding to 520051 its reverse (150025), we get a palindrome (670076).

The spelling of 520051 in words is "five hundred twenty thousand, fifty-one".