520587 has 10 divisors (see below), whose sum is σ = 777788. Its totient is φ = 347004.

The previous prime is 520571. The next prime is 520589. The reversal of 520587 is 785025.

It is a happy number.

It is not a de Polignac number, because 520587 - 2⁴ = 520571 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 5² + 2¹³ + 5⁸ + 0 + 8⁴ + 7⁶ .

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 520587.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520587.

It is not an unprimeable number, because it can be changed into a prime (520589) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3133 + ... + 3294.

2⁵²⁰⁵⁸⁷ is an apocalyptic number.

520587 is a deficient number, since it is larger than the sum of its proper divisors (257201).

520587 is an equidigital number, since it uses as much as digits as its factorization.

520587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6439 (or 6430 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 520587 is about 721.5171515633. The cubic root of 520587 is about 80.4447623319. Note that the first 3 decimals are identical.

The spelling of 520587 in words is "five hundred twenty thousand, five hundred eighty-seven".