50455509191 has 4 divisors (see below), whose sum is σ = 50456292432. Its totient is φ = 50454725952.

The previous prime is 50455509151. The next prime is 50455509199. The reversal of 50455509191 is 19190555405.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50455509191 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 (50455509199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285386 + ... + 427031.

It is an arithmetic number, because the mean of its divisors is an integer number (12614073108).

Almost surely, 2^50455509191 is an apocalyptic number.

50455509191 is a deficient number, since it is larger than the sum of its proper divisors (783241).

50455509191 is an equidigital number, since it uses as much as digits as its factorization.

50455509191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783240.

The product of its (nonzero) digits is 202500, while the sum is 44.

The spelling of 50455509191 in words is "fifty billion, four hundred fifty-five million, five hundred nine thousand, one hundred ninety-one".