204053405 has 4 divisors (see below), whose sum is σ = 244864092. Its totient is φ = 163242720.

The previous prime is 204053359. The next prime is 204053413. The reversal of 204053405 is 504350402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157076089 + 46977316 = 12533^2 + 6854^2 .

It is not a de Polignac number, because 204053405 - 2⁸ = 204053149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20405336 + ... + 20405345.

It is an arithmetic number, because the mean of its divisors is an integer number (61216023).

Almost surely, 2^204053405 is an apocalyptic number.

It is an amenable number.

204053405 is a deficient number, since it is larger than the sum of its proper divisors (40810687).

204053405 is an equidigital number, since it uses as much as digits as its factorization.

204053405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40810686.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 204053405 is about 14284.7262836920. The cubic root of 204053405 is about 588.7278969288.

The spelling of 204053405 in words is "two hundred four million, fifty-three thousand, four hundred five".