204247273 has 2 divisors, whose sum is σ = 204247274. Its totient is φ = 204247272.

The previous prime is 204247247. The next prime is 204247279. The reversal of 204247273 is 372742402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179774464 + 24472809 = 13408^2 + 4947^2 .

It is a cyclic number.

It is not a de Polignac number, because 204247273 - 2⁹ = 204246761 is a prime.

It is not a weakly prime, because it can be changed into another prime (204247279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102123636 + 102123637.

It is an arithmetic number, because the mean of its divisors is an integer number (102123637).

Almost surely, 2^204247273 is an apocalyptic number.

It is an amenable number.

204247273 is a deficient number, since it is larger than the sum of its proper divisors (1).

204247273 is an equidigital number, since it uses as much as digits as its factorization.

204247273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 204247273 is about 14291.5105219847. The cubic root of 204247273 is about 588.9142850182.

Adding to 204247273 its reverse (372742402), we get a palindrome (576989675).

The spelling of 204247273 in words is "two hundred four million, two hundred forty-seven thousand, two hundred seventy-three".