505163 has 4 divisors (see below), whose sum is σ = 507000. Its totient is φ = 503328.

The previous prime is 505159. The next prime is 505181. The reversal of 505163 is 361505.

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

It is a cyclic number.

It is not a de Polignac number, because 505163 - 2² = 505159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413 + ... + 1086.

It is an arithmetic number, because the mean of its divisors is an integer number (126750).

2⁵⁰⁵¹⁶³ is an apocalyptic number.

505163 is a deficient number, since it is larger than the sum of its proper divisors (1837).

505163 is a wasteful number, since it uses less digits than its factorization.

505163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 505163 is about 710.7481973245. The cubic root of 505163 is about 79.6423093510.

Adding to 505163 its reverse (361505), we get a palindrome (866668).

The spelling of 505163 in words is "five hundred five thousand, one hundred sixty-three".