50501 has 4 divisors (see below), whose sum is σ = 55104.
Its totient is φ = 45900.
The previous prime is 50497. The next prime is 50503. The reversal of 50501 is 10505.
50501 = T38 + T39 + ... +
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 50501 - 22 = 50497 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (11), and also a Moran number because the ratio is a prime number: 4591 = 50501 / (5 + 0 + 5 + 0 + 1).
It is an alternating number because its digits alternate between odd and even.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (50503) 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 3 ways as a sum of consecutive naturals, for example, 2285 + ... + 2306.
It is an arithmetic number, because the mean of its divisors is an integer number (13776).
250501 is an apocalyptic number.
50501 is the 101-st centered decagonal number.
It is an amenable number.
50501 is a deficient number, since it is larger than the sum of its proper divisors (4603).
50501 is a wasteful number, since it uses less digits than its factorization.
50501 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4602.
The product of its (nonzero) digits is 25, while the sum is 11.
The square root of 50501 is about 224.7242755022.
The cubic root of 50501 is about 36.9629529352.
The spelling of 50501 in words is "fifty thousand, five hundred one".