208224001 has 2 divisors, whose sum is σ = 208224002. Its totient is φ = 208224000.

The previous prime is 208223989. The next prime is 208224047. The reversal of 208224001 is 100422802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208051776 + 172225 = 14424^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 208224001 - 2⁵ = 208223969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 208224001.

It is not a weakly prime, because it can be changed into another prime (208224101) 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 as a sum of consecutive naturals, namely, 104112000 + 104112001.

It is an arithmetic number, because the mean of its divisors is an integer number (104112001).

Almost surely, 2^208224001 is an apocalyptic number.

It is an amenable number.

208224001 is a deficient number, since it is larger than the sum of its proper divisors (1).

208224001 is an equidigital number, since it uses as much as digits as its factorization.

208224001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 208224001 is about 14429.9688495852. The cubic root of 208224001 is about 592.7118303504.

Adding to 208224001 its reverse (100422802), we get a palindrome (308646803).

The spelling of 208224001 in words is "two hundred eight million, two hundred twenty-four thousand, one".