521163 has 12 divisors (see below), whose sum is σ = 763360. Its totient is φ = 342576.

The previous prime is 521161. The next prime is 521167. The reversal of 521163 is 361125.

It is not a de Polignac number, because 521163 - 2¹ = 521161 is a prime.

It is a super-2 number, since 2×521163² = 543221745138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521163.

It is not an unprimeable number, because it can be changed into a prime (521161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345 + ... + 1077.

2⁵²¹¹⁶³ is an apocalyptic number.

521163 is a deficient number, since it is larger than the sum of its proper divisors (242197).

521163 is a wasteful number, since it uses less digits than its factorization.

521163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 815 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 521163 is about 721.9162001230. The cubic root of 521163 is about 80.4744205857.

Adding to 521163 its reverse (361125), we get a palindrome (882288).

The spelling of 521163 in words is "five hundred twenty-one thousand, one hundred sixty-three".