204530453 has 2 divisors, whose sum is σ = 204530454. Its totient is φ = 204530452.

The previous prime is 204530449. The next prime is 204530479. The reversal of 204530453 is 354035402.

It is an a-pointer prime, because the next prime (204530479) can be obtained adding 204530453 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127757809 + 76772644 = 11303^2 + 8762^2 .

It is a cyclic number.

It is not a de Polignac number, because 204530453 - 2² = 204530449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204530423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102265226 + 102265227.

It is an arithmetic number, because the mean of its divisors is an integer number (102265227).

Almost surely, 2^204530453 is an apocalyptic number.

It is an amenable number.

204530453 is a deficient number, since it is larger than the sum of its proper divisors (1).

204530453 is an equidigital number, since it uses as much as digits as its factorization.

204530453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 204530453 is about 14301.4143706138. The cubic root of 204530453 is about 589.1863273839.

Adding to 204530453 its reverse (354035402), we get a palindrome (558565855).

The spelling of 204530453 in words is "two hundred four million, five hundred thirty thousand, four hundred fifty-three".