506081 has 4 divisors (see below), whose sum is σ = 508164. Its totient is φ = 504000.

The previous prime is 506071. The next prime is 506083. The reversal of 506081 is 180605.

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

It can be written as a sum of positive squares in 2 ways, for example, as 193600 + 312481 = 440^2 + 559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506081 is a prime.

It is a super-2 number, since 2×506081² = 512235957122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620 + ... + 1181.

It is an arithmetic number, because the mean of its divisors is an integer number (127041).

2⁵⁰⁶⁰⁸¹ is an apocalyptic number.

It is an amenable number.

506081 is a deficient number, since it is larger than the sum of its proper divisors (2083).

506081 is a wasteful number, since it uses less digits than its factorization.

506081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 506081 is about 711.3937025305. The cubic root of 506081 is about 79.6905230943.

Adding to 506081 its reverse (180605), we get a palindrome (686686).

The spelling of 506081 in words is "five hundred six thousand, eighty-one".