204252653 has 4 divisors (see below), whose sum is σ = 222821088. Its totient is φ = 185684220.

The previous prime is 204252589. The next prime is 204252661. The reversal of 204252653 is 356252402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204252653 - 2⁶ = 204252589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204252053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9284201 + ... + 9284222.

It is an arithmetic number, because the mean of its divisors is an integer number (55705272).

Almost surely, 2^204252653 is an apocalyptic number.

It is an amenable number.

204252653 is a deficient number, since it is larger than the sum of its proper divisors (18568435).

204252653 is a wasteful number, since it uses less digits than its factorization.

204252653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18568434.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 204252653 is about 14291.6987443761. The cubic root of 204252653 is about 588.9194557621.

The spelling of 204252653 in words is "two hundred four million, two hundred fifty-two thousand, six hundred fifty-three".