50001 has 8 divisors (see below), whose sum is σ = 76224.
Its totient is φ = 28560.
The previous prime is 49999. The next prime is 50021. The reversal of 50001 is 10005.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a trimorphic number since its cube, 125007500150001, ends in 50001.
It is not a de Polignac number, because 50001 - 21 = 49999 is a prime.
It is a Curzon number.
50001 is a lucky number.
It is not an unprimeable number, because it can be changed into a prime (50021) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170 + ... + 1211.
It is an arithmetic number, because the mean of its divisors is an integer number (9528).
250001 is an apocalyptic number.
It is an amenable number.
50001 is a deficient number, since it is larger than the sum of its proper divisors (26223).
50001 is a wasteful number, since it uses less digits than its factorization.
50001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2391.
The product of its (nonzero) digits is 5, while the sum is 6.
The square root of 50001 is about 223.6090338068.
The cubic root of 50001 is about 36.8405605869.
The spelling of 50001 in words is "fifty thousand, one".