50033991 has 32 divisors (see below), whose sum is σ = 78594048. Its totient is φ = 27721440.

The previous prime is 50033927. The next prime is 50033999. The reversal of 50033991 is 19933005.

It is not a de Polignac number, because 50033991 - 2⁶ = 50033927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50033999) 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 31 ways as a sum of consecutive naturals, for example, 160726 + ... + 161036.

It is an arithmetic number, because the mean of its divisors is an integer number (2456064).

Almost surely, 2^50033991 is an apocalyptic number.

50033991 is a deficient number, since it is larger than the sum of its proper divisors (28560057).

50033991 is a wasteful number, since it uses less digits than its factorization.

50033991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 50033991 is about 7073.4709301728. The cubic root of 50033991 is about 368.4866135632.

Adding to 50033991 its reverse (19933005), we get a palindrome (69966996).

The spelling of 50033991 in words is "fifty million, thirty-three thousand, nine hundred ninety-one".