204089257 has 2 divisors, whose sum is σ = 204089258. Its totient is φ = 204089256.

The previous prime is 204089251. The next prime is 204089341. The reversal of 204089257 is 752980402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199911321 + 4177936 = 14139^2 + 2044^2 .

It is a cyclic number.

It is not a de Polignac number, because 204089257 - 2¹⁹ = 203564969 is a prime.

It is not a weakly prime, because it can be changed into another prime (204089251) 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, 102044628 + 102044629.

It is an arithmetic number, because the mean of its divisors is an integer number (102044629).

Almost surely, 2^204089257 is an apocalyptic number.

It is an amenable number.

204089257 is a deficient number, since it is larger than the sum of its proper divisors (1).

204089257 is an equidigital number, since it uses as much as digits as its factorization.

204089257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 204089257 is about 14285.9811353648. The cubic root of 204089257 is about 588.7623745639.

The spelling of 204089257 in words is "two hundred four million, eighty-nine thousand, two hundred fifty-seven".