500051999 has 4 divisors (see below), whose sum is σ = 502643136. Its totient is φ = 497460864.

The previous prime is 500051977. The next prime is 500052011. The reversal of 500051999 is 999150005.

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

It is a cyclic number.

It is not a de Polignac number, because 500051999 - 2⁸ = 500051743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500051939) 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, 1295279 + ... + 1295664.

It is an arithmetic number, because the mean of its divisors is an integer number (125660784).

Almost surely, 2^500051999 is an apocalyptic number.

500051999 is a deficient number, since it is larger than the sum of its proper divisors (2591137).

500051999 is a wasteful number, since it uses less digits than its factorization.

500051999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591136.

The product of its (nonzero) digits is 18225, while the sum is 38.

The square root of 500051999 is about 22361.8424777566. The cubic root of 500051999 is about 793.7280394528.

The spelling of 500051999 in words is "five hundred million, fifty-one thousand, nine hundred ninety-nine".