204540453 has 48 divisors (see below), whose sum is σ = 338607360. Its totient is φ = 117936000.

The previous prime is 204540439. The next prime is 204540461. The reversal of 204540453 is 354045402.

204540453 is a `hidden beast` number, since 204 + 5 + 4 + 0 + 453 = 666.

It is not a de Polignac number, because 204540453 - 2⁴ = 204540437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204540463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224068 + ... + 224978.

It is an arithmetic number, because the mean of its divisors is an integer number (7054320).

Almost surely, 2^204540453 is an apocalyptic number.

It is an amenable number.

204540453 is a deficient number, since it is larger than the sum of its proper divisors (134066907).

204540453 is a wasteful number, since it uses less digits than its factorization.

204540453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 204540453 is about 14301.7639821107. The cubic root of 204540453 is about 589.1959294866.

Adding to 204540453 its reverse (354045402), we get a palindrome (558585855).

The spelling of 204540453 in words is "two hundred four million, five hundred forty thousand, four hundred fifty-three".