500091 has 8 divisors (see below), whose sum is σ = 674640. Its totient is φ = 329472.

The previous prime is 500083. The next prime is 500107. The reversal of 500091 is 190005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 500091 - 2³ = 500083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 500091.

It is not an unprimeable number, because it can be changed into a prime (500041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (84330).

2⁵⁰⁰⁰⁹¹ is an apocalyptic number.

500091 is a deficient number, since it is larger than the sum of its proper divisors (174549).

500091 is a wasteful number, since it uses less digits than its factorization.

500091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965.

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 500091 is about 707.1711249761. The cubic root of 500091 is about 79.3748674228.

Adding to 500091 its reverse (190005), we get a palindrome (690096).

The spelling of 500091 in words is "five hundred thousand, ninety-one".