520847 has 8 divisors (see below), whose sum is σ = 556800. Its totient is φ = 485784.

The previous prime is 520841. The next prime is 520853. The reversal of 520847 is 748025.

It is an interprime number because it is at equal distance from previous prime (520841) and next prime (520853).

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

It is a cyclic number.

It is not a de Polignac number, because 520847 - 2¹⁸ = 258703 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 (520841) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1328 + ... + 1674.

It is an arithmetic number, because the mean of its divisors is an integer number (69600).

2⁵²⁰⁸⁴⁷ is an apocalyptic number.

520847 is a deficient number, since it is larger than the sum of its proper divisors (35953).

520847 is a wasteful number, since it uses less digits than its factorization.

520847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

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

The square root of 520847 is about 721.6973049693. The cubic root of 520847 is about 80.4581524455.

The spelling of 520847 in words is "five hundred twenty thousand, eight hundred forty-seven".