520121 has 8 divisors (see below), whose sum is σ = 603840. Its totient is φ = 438768.

The previous prime is 520111. The next prime is 520123. The reversal of 520121 is 121025.

520121 is nontrivially palindromic in base 8.

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 520121 - 2¹⁰ = 519097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520123) 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, 86 + ... + 1023.

It is an arithmetic number, because the mean of its divisors is an integer number (75480).

2⁵²⁰¹²¹ is an apocalyptic number.

It is an amenable number.

520121 is a deficient number, since it is larger than the sum of its proper divisors (83719).

520121 is a wasteful number, since it uses less digits than its factorization.

520121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 520121 is about 721.1941486174. The cubic root of 520121 is about 80.4207519678.

Adding to 520121 its reverse (121025), we get a palindrome (641146).

The spelling of 520121 in words is "five hundred twenty thousand, one hundred twenty-one".