50111999 has 4 divisors (see below), whose sum is σ = 57270864. Its totient is φ = 42953136.

The previous prime is 50111993. The next prime is 50112017. The reversal of 50111999 is 99911105.

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 50111999 - 2⁴ = 50111983 is a prime.

It is a super-2 number, since 2×50111999² = 5022424887552002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50111993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3579422 + ... + 3579435.

It is an arithmetic number, because the mean of its divisors is an integer number (14317716).

Almost surely, 2^50111999 is an apocalyptic number.

50111999 is a deficient number, since it is larger than the sum of its proper divisors (7158865).

50111999 is an equidigital number, since it uses as much as digits as its factorization.

50111999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7158864.

The product of its (nonzero) digits is 3645, while the sum is 35.

The square root of 50111999 is about 7078.9829071696. The cubic root of 50111999 is about 368.6780166299.

The spelling of 50111999 in words is "fifty million, one hundred eleven thousand, nine hundred ninety-nine".