204868501 has 4 divisors (see below), whose sum is σ = 206897004. Its totient is φ = 202840000.

The previous prime is 204868487. The next prime is 204868529. The reversal of 204868501 is 105868402.

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 202066225 + 2802276 = 14215^2 + 1674^2 .

It is a cyclic number.

It is not a de Polignac number, because 204868501 - 2⁹ = 204867989 is a prime.

It is a super-2 number, since 2×204868501² = 83942205403974002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204868571) 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 3 ways as a sum of consecutive naturals, for example, 1014100 + ... + 1014301.

It is an arithmetic number, because the mean of its divisors is an integer number (51724251).

Almost surely, 2^204868501 is an apocalyptic number.

It is an amenable number.

204868501 is a deficient number, since it is larger than the sum of its proper divisors (2028503).

204868501 is a wasteful number, since it uses less digits than its factorization.

204868501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028502.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 204868501 is about 14313.2281823494. The cubic root of 204868501 is about 589.5107511655.

Subtracting from 204868501 its reverse (105868402), we obtain a palindrome (99000099).

The spelling of 204868501 in words is "two hundred four million, eight hundred sixty-eight thousand, five hundred one".