50551993 has 4 divisors (see below), whose sum is σ = 50570100. Its totient is φ = 50533888.

The previous prime is 50551987. The next prime is 50552009. The reversal of 50551993 is 39915505.

50551993 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.

It can be written as a sum of positive squares in 2 ways, for example, as 25431849 + 25120144 = 5043^2 + 5012^2 .

It is a cyclic number.

It is not a de Polignac number, because 50551993 - 2¹⁷ = 50420921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50551393) 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, 3880 + ... + 10777.

It is an arithmetic number, because the mean of its divisors is an integer number (12642525).

Almost surely, 2^50551993 is an apocalyptic number.

It is an amenable number.

50551993 is a deficient number, since it is larger than the sum of its proper divisors (18107).

50551993 is a wasteful number, since it uses less digits than its factorization.

50551993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18106.

The product of its (nonzero) digits is 30375, while the sum is 37.

The square root of 50551993 is about 7109.9924753828. The cubic root of 50551993 is about 369.7538977021.

The spelling of 50551993 in words is "fifty million, five hundred fifty-one thousand, nine hundred ninety-three".