204513401 has 16 divisors (see below), whose sum is σ = 217451520. Its totient is φ = 191951760.

The previous prime is 204513373. The next prime is 204513409. The reversal of 204513401 is 104315402.

It is a cyclic number.

It is not a de Polignac number, because 204513401 - 2²⁶ = 137404537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204513409) 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 15 ways as a sum of consecutive naturals, for example, 310010 + ... + 310668.

It is an arithmetic number, because the mean of its divisors is an integer number (13590720).

Almost surely, 2^204513401 is an apocalyptic number.

It is an amenable number.

204513401 is a deficient number, since it is larger than the sum of its proper divisors (12938119).

204513401 is a wasteful number, since it uses less digits than its factorization.

204513401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 204513401 is about 14300.8181933762. The cubic root of 204513401 is about 589.1699531564.

Adding to 204513401 its reverse (104315402), we get a palindrome (308828803).

The spelling of 204513401 in words is "two hundred four million, five hundred thirteen thousand, four hundred one".