204407253 has 16 divisors (see below), whose sum is σ = 303049600. Its totient is φ = 136170720.

The previous prime is 204407243. The next prime is 204407257. The reversal of 204407253 is 352704402.

204407253 is a `hidden beast` number, since 2 + 0 + 4 + 407 + 253 = 666.

It is not a de Polignac number, because 204407253 - 2⁴ = 204407237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204407257) 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 15 ways as a sum of consecutive naturals, for example, 59928 + ... + 63246.

It is an arithmetic number, because the mean of its divisors is an integer number (18940600).

Almost surely, 2^204407253 is an apocalyptic number.

It is an amenable number.

204407253 is a deficient number, since it is larger than the sum of its proper divisors (98642347).

204407253 is a wasteful number, since it uses less digits than its factorization.

204407253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5609 (or 5603 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 204407253 is about 14297.1064555035. The cubic root of 204407253 is about 589.0680037897.

The spelling of 204407253 in words is "two hundred four million, four hundred seven thousand, two hundred fifty-three".