500055009 has 16 divisors (see below), whose sum is σ = 674798592. Its totient is φ = 329356368.

The previous prime is 500054987. The next prime is 500055013. The reversal of 500055009 is 900550005.

It is not a de Polignac number, because 500055009 - 2¹¹ = 500052961 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 500055009.

It is not an unprimeable number, because it can be changed into a prime (500055709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148822 + ... + 152144.

It is an arithmetic number, because the mean of its divisors is an integer number (42174912).

Almost surely, 2^500055009 is an apocalyptic number.

It is an amenable number.

500055009 is a deficient number, since it is larger than the sum of its proper divisors (174743583).

500055009 is a wasteful number, since it uses less digits than its factorization.

500055009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916.

The product of its (nonzero) digits is 1125, while the sum is 24.

The square root of 500055009 is about 22361.9097798019. The cubic root of 500055009 is about 793.7296320316.

The spelling of 500055009 in words is "five hundred million, fifty-five thousand, nine".