50666138 has 8 divisors (see below), whose sum is σ = 76035540. Its totient is φ = 25320960.

The previous prime is 50666131. The next prime is 50666197. The reversal of 50666138 is 83166605.

It can be written as a sum of positive squares in 2 ways, for example, as 43467649 + 7198489 = 6593^2 + 2683^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50666098 and 50666107.

It is not an unprimeable number, because it can be changed into a prime (50666131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668 + ... + 10088.

Almost surely, 2^50666138 is an apocalyptic number.

50666138 is a deficient number, since it is larger than the sum of its proper divisors (25369402).

50666138 is a wasteful number, since it uses less digits than its factorization.

50666138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12112.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 50666138 is about 7118.0150322966. The cubic root of 50666138 is about 370.0319865213.

The spelling of 50666138 in words is "fifty million, six hundred sixty-six thousand, one hundred thirty-eight".