504081 has 6 divisors (see below), whose sum is σ = 728130. Its totient is φ = 336048.

The previous prime is 504073. The next prime is 504103. The reversal of 504081 is 180405.

It can be written as a sum of positive squares in only one way, i.e., 497025 + 7056 = 705^2 + 84^2 .

It is not a de Polignac number, because 504081 - 2³ = 504073 is a prime.

It is a super-2 number, since 2×504081² = 508195309122, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (504001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27996 + ... + 28013.

It is an arithmetic number, because the mean of its divisors is an integer number (121355).

2⁵⁰⁴⁰⁸¹ is an apocalyptic number.

It is an amenable number.

504081 is a deficient number, since it is larger than the sum of its proper divisors (224049).

504081 is a wasteful number, since it uses less digits than its factorization.

504081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56015 (or 56012 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 504081 is about 709.9866195922. The cubic root of 504081 is about 79.5854072051.

Adding to 504081 its reverse (180405), we get a palindrome (684486).

The spelling of 504081 in words is "five hundred four thousand, eighty-one".