520487 has 4 divisors (see below), whose sum is σ = 567816. Its totient is φ = 473160.

The previous prime is 520451. The next prime is 520529. The reversal of 520487 is 784025.

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 520487 - 2⁶ = 520423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520427) 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, 23648 + ... + 23669.

It is an arithmetic number, because the mean of its divisors is an integer number (141954).

2⁵²⁰⁴⁸⁷ is an apocalyptic number.

520487 is a deficient number, since it is larger than the sum of its proper divisors (47329).

520487 is a wasteful number, since it uses less digits than its factorization.

520487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47328.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 520487 is about 721.4478498131. The cubic root of 520487 is about 80.4396111011.

The spelling of 520487 in words is "five hundred twenty thousand, four hundred eighty-seven".