50739121 has 4 divisors (see below), whose sum is σ = 51002212. Its totient is φ = 50476032.

The previous prime is 50739113. The next prime is 50739131. The reversal of 50739121 is 12193705.

50739121 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 3748096 + 46991025 = 1936^2 + 6855^2 .

It is a cyclic number.

It is not a de Polignac number, because 50739121 - 2³ = 50739113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50739121.

It is not an unprimeable number, because it can be changed into a prime (50739131) 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, 131256 + ... + 131641.

It is an arithmetic number, because the mean of its divisors is an integer number (12750553).

Almost surely, 2^50739121 is an apocalyptic number.

It is an amenable number.

50739121 is a deficient number, since it is larger than the sum of its proper divisors (263091).

50739121 is a wasteful number, since it uses less digits than its factorization.

50739121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263090.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 50739121 is about 7123.1398273514. The cubic root of 50739121 is about 370.2095744777.

The spelling of 50739121 in words is "fifty million, seven hundred thirty-nine thousand, one hundred twenty-one".