50981911 has 4 divisors (see below), whose sum is σ = 51249024. Its totient is φ = 50714800.

The previous prime is 50981899. The next prime is 50981941. The reversal of 50981911 is 11918905.

50981911 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 is a cyclic number.

It is not a de Polignac number, because 50981911 - 2⁷ = 50981783 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 (50981941) 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, 133270 + ... + 133651.

It is an arithmetic number, because the mean of its divisors is an integer number (12812256).

Almost surely, 2^50981911 is an apocalyptic number.

50981911 is a deficient number, since it is larger than the sum of its proper divisors (267113).

50981911 is a wasteful number, since it uses less digits than its factorization.

50981911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267112.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 50981911 is about 7140.1618328999. The cubic root of 50981911 is about 370.7991274373.

The spelling of 50981911 in words is "fifty million, nine hundred eighty-one thousand, nine hundred eleven".