506091 has 4 divisors (see below), whose sum is σ = 674792. Its totient is φ = 337392.

The previous prime is 506083. The next prime is 506101. The reversal of 506091 is 190605.

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

It is not a de Polignac number, because 506091 - 2³ = 506083 is a prime.

It is a super-2 number, since 2×506091² = 512256200562, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506071) 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, 84346 + ... + 84351.

It is an arithmetic number, because the mean of its divisors is an integer number (168698).

2⁵⁰⁶⁰⁹¹ is an apocalyptic number.

506091 is a deficient number, since it is larger than the sum of its proper divisors (168701).

506091 is a wasteful number, since it uses less digits than its factorization.

506091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168700.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 506091 is about 711.4007309527. The cubic root of 506091 is about 79.6910479774.

Adding to 506091 its reverse (190605), we get a palindrome (696696).

It can be divided in two parts, 5060 and 91, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 506091 in words is "five hundred six thousand, ninety-one".