50639746 has 4 divisors (see below), whose sum is σ = 75959622. Its totient is φ = 25319872.

The previous prime is 50639689. The next prime is 50639747. The reversal of 50639746 is 64793605.

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

It can be written as a sum of positive squares in only one way, i.e., 40005625 + 10634121 = 6325^2 + 3261^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 50639699 and 50639708.

It is not an unprimeable number, because it can be changed into a prime (50639747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12659935 + ... + 12659938.

Almost surely, 2^50639746 is an apocalyptic number.

50639746 is a deficient number, since it is larger than the sum of its proper divisors (25319876).

50639746 is a wasteful number, since it uses less digits than its factorization.

50639746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25319875.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 50639746 is about 7116.1609031837. The cubic root of 50639746 is about 369.9677254536.

The spelling of 50639746 in words is "fifty million, six hundred thirty-nine thousand, seven hundred forty-six".