520087 has 8 divisors (see below), whose sum is σ = 565760. Its totient is φ = 476280.

The previous prime is 520073. The next prime is 520103. The reversal of 520087 is 780025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520087 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520067) 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, 148 + ... + 1030.

It is an arithmetic number, because the mean of its divisors is an integer number (70720).

2⁵²⁰⁰⁸⁷ is an apocalyptic number.

520087 is the 589-th pentagonal number.

520087 is a deficient number, since it is larger than the sum of its proper divisors (45673).

520087 is a wasteful number, since it uses less digits than its factorization.

520087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 520087 is about 721.1705762162. The cubic root of 520087 is about 80.4189995774.

The spelling of 520087 in words is "five hundred twenty thousand, eighty-seven".