204355001 has 4 divisors (see below), whose sum is σ = 204999972. Its totient is φ = 203710032.

The previous prime is 204354991. The next prime is 204355003. The reversal of 204355001 is 100553402.

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 62173225 + 142181776 = 7885^2 + 11924^2 .

It is a cyclic number.

It is not a de Polignac number, because 204355001 - 2¹⁸ = 204092857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204355003) 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, 322010 + ... + 322643.

It is an arithmetic number, because the mean of its divisors is an integer number (51249993).

Almost surely, 2^204355001 is an apocalyptic number.

It is an amenable number.

204355001 is a deficient number, since it is larger than the sum of its proper divisors (644971).

204355001 is an equidigital number, since it uses as much as digits as its factorization.

204355001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644970.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 204355001 is about 14295.2789759417. The cubic root of 204355001 is about 589.0178056289.

The spelling of 204355001 in words is "two hundred four million, three hundred fifty-five thousand, one".