204540455 has 12 divisors (see below), whose sum is σ = 285522120. Its totient is φ = 140256144.

The previous prime is 204540439. The next prime is 204540461. The reversal of 204540455 is 554045402.

It is not a de Polignac number, because 204540455 - 2⁴ = 204540439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417185 + ... + 417674.

It is an arithmetic number, because the mean of its divisors is an integer number (23793510).

Almost surely, 2^204540455 is an apocalyptic number.

204540455 is a deficient number, since it is larger than the sum of its proper divisors (80981665).

204540455 is an equidigital number, since it uses as much as digits as its factorization.

204540455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834878 (or 834871 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 204540455 is about 14301.7640520322. The cubic root of 204540455 is about 589.1959314070.

Adding to 204540455 its reverse (554045402), we get a palindrome (758585857).

The spelling of 204540455 in words is "two hundred four million, five hundred forty thousand, four hundred fifty-five".