520097 has 4 divisors (see below), whose sum is σ = 521796. Its totient is φ = 518400.

The previous prime is 520073. The next prime is 520103. The reversal of 520097 is 790025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 516961 + 3136 = 719^2 + 56^2 .

It is a cyclic number.

It is not a de Polignac number, because 520097 - 2¹⁸ = 257953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520067) 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 3 ways as a sum of consecutive naturals, for example, 248 + ... + 1049.

It is an arithmetic number, because the mean of its divisors is an integer number (130449).

2⁵²⁰⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

520097 is a deficient number, since it is larger than the sum of its proper divisors (1699).

520097 is a wasteful number, since it uses less digits than its factorization.

520097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 520097 is about 721.1775093554. The cubic root of 520097 is about 80.4195149942.

It can be divided in two parts, 5 and 20097, that added together give a palindrome (20102).

The spelling of 520097 in words is "five hundred twenty thousand, ninety-seven".