204955385 has 16 divisors (see below), whose sum is σ = 248928384. Its totient is φ = 161989632.

The previous prime is 204955381. The next prime is 204955393. The reversal of 204955385 is 583559402.

It is a cyclic number.

It is not a de Polignac number, because 204955385 - 2² = 204955381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204955381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156644 + ... + 157946.

It is an arithmetic number, because the mean of its divisors is an integer number (15558024).

Almost surely, 2^204955385 is an apocalyptic number.

It is an amenable number.

204955385 is a deficient number, since it is larger than the sum of its proper divisors (43972999).

204955385 is a wasteful number, since it uses less digits than its factorization.

204955385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664.

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 204955385 is about 14316.2629551151. The cubic root of 204955385 is about 589.5940758558.

The spelling of 204955385 in words is "two hundred four million, nine hundred fifty-five thousand, three hundred eighty-five".