50543643 has 4 divisors (see below), whose sum is σ = 67391528. Its totient is φ = 33695760.

The previous prime is 50543639. The next prime is 50543651. The reversal of 50543643 is 34634505.

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

It is not a de Polignac number, because 50543643 - 2² = 50543639 is a prime.

It is a super-2 number, since 2×50543643² = 5109319695422898, which contains 22 as substring.

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 50543643.

It is not an unprimeable number, because it can be changed into a prime (50543653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8423938 + ... + 8423943.

It is an arithmetic number, because the mean of its divisors is an integer number (16847882).

Almost surely, 2^50543643 is an apocalyptic number.

50543643 is a deficient number, since it is larger than the sum of its proper divisors (16847885).

50543643 is a wasteful number, since it uses less digits than its factorization.

50543643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16847884.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 50543643 is about 7109.4052493862. The cubic root of 50543643 is about 369.7335383660.

The spelling of 50543643 in words is "fifty million, five hundred forty-three thousand, six hundred forty-three".