204921053 has 4 divisors (see below), whose sum is σ = 213830688. Its totient is φ = 196011420.

The previous prime is 204921037. The next prime is 204921071. The reversal of 204921053 is 350129402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204921053 - 2⁴ = 204921037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204923053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4454783 + ... + 4454828.

It is an arithmetic number, because the mean of its divisors is an integer number (53457672).

Almost surely, 2^204921053 is an apocalyptic number.

204921053 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

204921053 is a deficient number, since it is larger than the sum of its proper divisors (8909635).

204921053 is an equidigital number, since it uses as much as digits as its factorization.

204921053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8909634.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 204921053 is about 14315.0638489669. The cubic root of 204921053 is about 589.5611531229.

The spelling of 204921053 in words is "two hundred four million, nine hundred twenty-one thousand, fifty-three".