50029991 has 12 divisors (see below), whose sum is σ = 57385776. Its totient is φ = 43501920.

The previous prime is 50029951. The next prime is 50030003. The reversal of 50029991 is 19992005.

It is not a de Polignac number, because 50029991 - 2⁶ = 50029927 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 (50029921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6206 + ... + 11771.

It is an arithmetic number, because the mean of its divisors is an integer number (4782148).

Almost surely, 2^50029991 is an apocalyptic number.

50029991 is a deficient number, since it is larger than the sum of its proper divisors (7355785).

50029991 is a wasteful number, since it uses less digits than its factorization.

50029991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18022 (or 18011 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 50029991 is about 7073.1881779011. The cubic root of 50029991 is about 368.4767936674.

The spelling of 50029991 in words is "fifty million, twenty-nine thousand, nine hundred ninety-one".