520895 has 4 divisors (see below), whose sum is σ = 625080. Its totient is φ = 416712.

The previous prime is 520889. The next prime is 520913. The reversal of 520895 is 598025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520895 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52085 + ... + 52094.

It is an arithmetic number, because the mean of its divisors is an integer number (156270).

2⁵²⁰⁸⁹⁵ is an apocalyptic number.

520895 is a deficient number, since it is larger than the sum of its proper divisors (104185).

520895 is a wasteful number, since it uses less digits than its factorization.

520895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104184.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 520895 is about 721.7305591424. The cubic root of 520895 is about 80.4606239791.

The spelling of 520895 in words is "five hundred twenty thousand, eight hundred ninety-five".