506111 has 4 divisors (see below), whose sum is σ = 511224. Its totient is φ = 501000.

The previous prime is 506101. The next prime is 506113. The reversal of 506111 is 111605.

Added to its reverse (111605) it gives a triangular number (617716 = T₁₁₁₁).

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 506111 - 2⁶ = 506047 is a prime.

It is a super-2 number, since 2×506111² = 512296688642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506113) 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, 2405 + ... + 2606.

It is an arithmetic number, because the mean of its divisors is an integer number (127806).

2⁵⁰⁶¹¹¹ is an apocalyptic number.

506111 is a deficient number, since it is larger than the sum of its proper divisors (5113).

506111 is a wasteful number, since it uses less digits than its factorization.

506111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 506111 is about 711.4147875888. The cubic root of 506111 is about 79.6920977227.

Adding to 506111 its reverse (111605), we get a palindrome (617716).

The spelling of 506111 in words is "five hundred six thousand, one hundred eleven".