520489 has 6 divisors (see below), whose sum is σ = 553214. Its totient is φ = 489600.

The previous prime is 520451. The next prime is 520529. The reversal of 520489 is 984025.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 110889 + 409600 = 333^2 + 640^2 .

It is not a de Polignac number, because 520489 - 2⁷ = 520361 is a prime.

520489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (520409) 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 5 ways as a sum of consecutive naturals, for example, 612 + ... + 1189.

2⁵²⁰⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

520489 is a deficient number, since it is larger than the sum of its proper divisors (32725).

520489 is a wasteful number, since it uses less digits than its factorization.

520489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1818 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 520489 is about 721.4492359134. The cubic root of 520489 is about 80.4397141322.

The spelling of 520489 in words is "five hundred twenty thousand, four hundred eighty-nine".