204001097 has 2 divisors, whose sum is σ = 204001098. Its totient is φ = 204001096.

The previous prime is 204001093. The next prime is 204001123. The reversal of 204001097 is 790100402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172685881 + 31315216 = 13141^2 + 5596^2 .

It is a cyclic number.

It is not a de Polignac number, because 204001097 - 2² = 204001093 is a prime.

It is not a weakly prime, because it can be changed into another prime (204001093) 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, 102000548 + 102000549.

It is an arithmetic number, because the mean of its divisors is an integer number (102000549).

Almost surely, 2^204001097 is an apocalyptic number.

It is an amenable number.

204001097 is a deficient number, since it is larger than the sum of its proper divisors (1).

204001097 is an equidigital number, since it uses as much as digits as its factorization.

204001097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 204001097 is about 14282.8952597154. The cubic root of 204001097 is about 588.6775868795.

Adding to 204001097 its reverse (790100402), we get a palindrome (994101499).

The spelling of 204001097 in words is "two hundred four million, one thousand, ninety-seven".