208501 has 2 divisors, whose sum is σ = 208502.
Its totient is φ = 208500.
The previous prime is 208499. The next prime is 208511. The reversal of 208501 is 105802.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 168100 + 40401 = 410^2 + 201^2
It is a cyclic number.
It is not a de Polignac number, because 208501 - 21 = 208499 is a prime.
Together with 208499, it forms a pair of twin primes.
208501 is a lucky number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (208511) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104250 + 104251.
It is an arithmetic number, because the mean of its divisors is an integer number (104251).
2208501 is an apocalyptic number.
It is an amenable number.
208501 is a deficient number, since it is larger than the sum of its proper divisors (1).
208501 is an equidigital number, since it uses as much as digits as its factorization.
208501 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 80, while the sum is 16.
The square root of 208501 is about 456.6190972791.
The cubic root of 208501 is about 59.2974540756.
The spelling of 208501 in words is "two hundred eight thousand, five hundred one".