500081 has 4 divisors (see below), whose sum is σ = 502512. Its totient is φ = 497652.

The previous prime is 500069. The next prime is 500083. The reversal of 500081 is 180005.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 500081 - 2¹⁴ = 483697 is a prime.

It is a super-2 number, since 2×500081² = 500162013122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500083) 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, 875 + ... + 1328.

It is an arithmetic number, because the mean of its divisors is an integer number (125628).

2⁵⁰⁰⁰⁸¹ is an apocalyptic number.

It is an amenable number.

500081 is a deficient number, since it is larger than the sum of its proper divisors (2431).

500081 is a wasteful number, since it uses less digits than its factorization.

500081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 500081 is about 707.1640545163. The cubic root of 500081 is about 79.3743383498.

Adding to 500081 its reverse (180005), we get a palindrome (680086).

The spelling of 500081 in words is "five hundred thousand, eighty-one".