204528653 has 4 divisors (see below), whose sum is σ = 233747040. Its totient is φ = 175310268.

The previous prime is 204528617. The next prime is 204528661. The reversal of 204528653 is 356825402.

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 not a de Polignac number, because 204528653 - 2¹² = 204524557 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 (206528653) 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, 14609183 + ... + 14609196.

It is an arithmetic number, because the mean of its divisors is an integer number (58436760).

Almost surely, 2^204528653 is an apocalyptic number.

It is an amenable number.

204528653 is a deficient number, since it is larger than the sum of its proper divisors (29218387).

204528653 is an equidigital number, since it uses as much as digits as its factorization.

204528653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29218386.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 204528653 is about 14301.3514396367. The cubic root of 204528653 is about 589.1845989721.

The spelling of 204528653 in words is "two hundred four million, five hundred twenty-eight thousand, six hundred fifty-three".