50643647 has 4 divisors (see below), whose sum is σ = 50966376. Its totient is φ = 50320920.

The previous prime is 50643613. The next prime is 50643727. The reversal of 50643647 is 74634605.

50643647 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, and also an emirpimes, since its reverse is a distinct semiprime: 74634605 = 5 ⋅14926921.

It is a cyclic number.

It is not a de Polignac number, because 50643647 - 2¹⁸ = 50381503 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 (50643347) 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, 161129 + ... + 161442.

It is an arithmetic number, because the mean of its divisors is an integer number (12741594).

Almost surely, 2^50643647 is an apocalyptic number.

50643647 is a deficient number, since it is larger than the sum of its proper divisors (322729).

50643647 is a wasteful number, since it uses less digits than its factorization.

50643647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322728.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 50643647 is about 7116.4349923259. The cubic root of 50643647 is about 369.9772252843.

The spelling of 50643647 in words is "fifty million, six hundred forty-three thousand, six hundred forty-seven".