50911129 has 4 divisors (see below), whose sum is σ = 51436084. Its totient is φ = 50386176.

The previous prime is 50911099. The next prime is 50911187. The reversal of 50911129 is 92111905.

50911129 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 31945104 + 18966025 = 5652^2 + 4355^2 .

It is a cyclic number.

It is not a de Polignac number, because 50911129 - 2²¹ = 48813977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50911097 and 50911106.

It is not an unprimeable number, because it can be changed into a prime (50915129) 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, 262332 + ... + 262525.

It is an arithmetic number, because the mean of its divisors is an integer number (12859021).

Almost surely, 2^50911129 is an apocalyptic number.

It is an amenable number.

50911129 is a deficient number, since it is larger than the sum of its proper divisors (524955).

50911129 is an equidigital number, since it uses as much as digits as its factorization.

50911129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524954.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 50911129 is about 7135.2035009522. The cubic root of 50911129 is about 370.6274452394.

It can be divided in two parts, 50911 and 129, that added together give a triangular number (51040 = T₃₁₉).

The spelling of 50911129 in words is "fifty million, nine hundred eleven thousand, one hundred twenty-nine".