520535 has 4 divisors (see below), whose sum is σ = 624648. Its totient is φ = 416424.

The previous prime is 520529. The next prime is 520547. The reversal of 520535 is 535025.

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 520535 - 2⁸ = 520279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 52049 + ... + 52058.

It is an arithmetic number, because the mean of its divisors is an integer number (156162).

2⁵²⁰⁵³⁵ is an apocalyptic number.

520535 is a deficient number, since it is larger than the sum of its proper divisors (104113).

520535 is a wasteful number, since it uses less digits than its factorization.

520535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104112.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 520535 is about 721.4811154840. The cubic root of 520535 is about 80.4420837742.

The spelling of 520535 in words is "five hundred twenty thousand, five hundred thirty-five".