204152617 has 2 divisors, whose sum is σ = 204152618. Its totient is φ = 204152616.

The previous prime is 204152581. The next prime is 204152621. The reversal of 204152617 is 716251402.

204152617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144384256 + 59768361 = 12016^2 + 7731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204152617 is a prime.

It is not a weakly prime, because it can be changed into another prime (204152647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102076308 + 102076309.

It is an arithmetic number, because the mean of its divisors is an integer number (102076309).

Almost surely, 2^204152617 is an apocalyptic number.

It is an amenable number.

204152617 is a deficient number, since it is larger than the sum of its proper divisors (1).

204152617 is an equidigital number, since it uses as much as digits as its factorization.

204152617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 204152617 is about 14288.1985218571. The cubic root of 204152617 is about 588.8232958244.

It can be divided in two parts, 20415 and 2617, that added together give a palindrome (23032).

The spelling of 204152617 in words is "two hundred four million, one hundred fifty-two thousand, six hundred seventeen".