50645993 has 4 divisors (see below), whose sum is σ = 50683008. Its totient is φ = 50608980.

The previous prime is 50645981. The next prime is 50646017. The reversal of 50645993 is 39954605.

50645993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50645993 - 2¹⁸ = 50383849 is a prime.

It is a Duffinian number.

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 50645993.

It is not an unprimeable number, because it can be changed into a prime (50645093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16373 + ... + 19218.

It is an arithmetic number, because the mean of its divisors is an integer number (12670752).

Almost surely, 2^50645993 is an apocalyptic number.

It is an amenable number.

50645993 is a deficient number, since it is larger than the sum of its proper divisors (37015).

50645993 is a wasteful number, since it uses less digits than its factorization.

50645993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37014.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 50645993 is about 7116.5998201388. The cubic root of 50645993 is about 369.9829380981.

The spelling of 50645993 in words is "fifty million, six hundred forty-five thousand, nine hundred ninety-three".