520161 has 8 divisors (see below), whose sum is σ = 702240. Its totient is φ = 342432.

The previous prime is 520151. The next prime is 520193. The reversal of 520161 is 161025.

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

It is not a de Polignac number, because 520161 - 2⁵ = 520129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520161.

It is not an unprimeable number, because it can be changed into a prime (520111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796 + ... + 1293.

It is an arithmetic number, because the mean of its divisors is an integer number (87780).

2⁵²⁰¹⁶¹ is an apocalyptic number.

It is an amenable number.

520161 is a deficient number, since it is larger than the sum of its proper divisors (182079).

520161 is a wasteful number, since it uses less digits than its factorization.

520161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 520161 is about 721.2218798678. The cubic root of 520161 is about 80.4228135058.

Adding to 520161 its reverse (161025), we get a palindrome (681186).

The spelling of 520161 in words is "five hundred twenty thousand, one hundred sixty-one".