520897 has 8 divisors (see below), whose sum is σ = 594216. Its totient is φ = 452352.

The previous prime is 520889. The next prime is 520913. The reversal of 520897 is 798025.

It can be written as a sum of positive squares in 4 ways, for example, as 15376 + 505521 = 124^2 + 711^2 .

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 520897 - 2³ = 520889 is a prime.

It is a Duffinian number.

520897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (520837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958 + ... + 1399.

It is an arithmetic number, because the mean of its divisors is an integer number (74277).

2⁵²⁰⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

520897 is a deficient number, since it is larger than the sum of its proper divisors (73319).

520897 is a wasteful number, since it uses less digits than its factorization.

520897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 520897 is about 721.7319446997. The cubic root of 520897 is about 80.4607269564.

It can be divided in two parts, 5 and 20897, that added together give a palindrome (20902).

The spelling of 520897 in words is "five hundred twenty thousand, eight hundred ninety-seven".