204104251 has 8 divisors (see below), whose sum is σ = 231373520. Its totient is φ = 178487712.

The previous prime is 204104249. The next prime is 204104267. The reversal of 204104251 is 152401402.

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

It is not a de Polignac number, because 204104251 - 2¹ = 204104249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204104951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412920 + ... + 413413.

It is an arithmetic number, because the mean of its divisors is an integer number (28921690).

Almost surely, 2^204104251 is an apocalyptic number.

204104251 is a deficient number, since it is larger than the sum of its proper divisors (27269269).

204104251 is a wasteful number, since it uses less digits than its factorization.

204104251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826365.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 204104251 is about 14286.5059059240. The cubic root of 204104251 is about 588.7767925805.

Adding to 204104251 its reverse (152401402), we get a palindrome (356505653).

The spelling of 204104251 in words is "two hundred four million, one hundred four thousand, two hundred fifty-one".