520430 has 16 divisors (see below), whose sum is σ = 951264. Its totient is φ = 204960.

The previous prime is 520427. The next prime is 520433. The reversal of 520430 is 34025.

It is an interprime number because it is at equal distance from previous prime (520427) and next prime (520433).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344 + ... + 1076.

It is an arithmetic number, because the mean of its divisors is an integer number (59454).

2⁵²⁰⁴³⁰ is an apocalyptic number.

520430 is a deficient number, since it is larger than the sum of its proper divisors (430834).

520430 is a wasteful number, since it uses less digits than its factorization.

520430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 520430 is about 721.4083448367. The cubic root of 520430 is about 80.4366746043.

Adding to 520430 its reverse (34025), we get a palindrome (554455).

The spelling of 520430 in words is "five hundred twenty thousand, four hundred thirty".