204456953 has 2 divisors, whose sum is σ = 204456954. Its totient is φ = 204456952.

The previous prime is 204456949. The next prime is 204456979. The reversal of 204456953 is 359654402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192876544 + 11580409 = 13888^2 + 3403^2 .

It is a cyclic number.

It is not a de Polignac number, because 204456953 - 2² = 204456949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (204456983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102228476 + 102228477.

It is an arithmetic number, because the mean of its divisors is an integer number (102228477).

Almost surely, 2^204456953 is an apocalyptic number.

It is an amenable number.

204456953 is a deficient number, since it is larger than the sum of its proper divisors (1).

204456953 is an equidigital number, since it uses as much as digits as its factorization.

204456953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 204456953 is about 14298.8444638020. The cubic root of 204456953 is about 589.1157423229.

The spelling of 204456953 in words is "two hundred four million, four hundred fifty-six thousand, nine hundred fifty-three".