204010001 has 8 divisors (see below), whose sum is σ = 221879784. Its totient is φ = 186451200.

The previous prime is 204009947. The next prime is 204010019. The reversal of 204010001 is 100010402.

It can be written as a sum of positive squares in 4 ways, for example, as 75777025 + 128232976 = 8705^2 + 11324^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204010001 - 2¹⁰ = 204008977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204010021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 76376 + ... + 79001.

It is an arithmetic number, because the mean of its divisors is an integer number (27734973).

Almost surely, 2^204010001 is an apocalyptic number.

It is an amenable number.

204010001 is a deficient number, since it is larger than the sum of its proper divisors (17869783).

204010001 is a wasteful number, since it uses less digits than its factorization.

204010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155491.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 204010001 is about 14283.2069578229. The cubic root of 204010001 is about 588.6861513906.

Adding to 204010001 its reverse (100010402), we get a palindrome (304020403).

The spelling of 204010001 in words is "two hundred four million, ten thousand, one".