205235153 has 4 divisors (see below), whose sum is σ = 205414308. Its totient is φ = 205056000.

The previous prime is 205235111. The next prime is 205235161. The reversal of 205235153 is 351532502.

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 171269569 + 33965584 = 13087^2 + 5828^2 .

It is a cyclic number.

It is not a de Polignac number, because 205235153 - 2⁶ = 205235089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205235183) 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, 87848 + ... + 90153.

It is an arithmetic number, because the mean of its divisors is an integer number (51353577).

Almost surely, 2^205235153 is an apocalyptic number.

It is an amenable number.

205235153 is a deficient number, since it is larger than the sum of its proper divisors (179155).

205235153 is a wasteful number, since it uses less digits than its factorization.

205235153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179154.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 205235153 is about 14326.0306086508. The cubic root of 205235153 is about 589.8622229278.

Adding to 205235153 its reverse (351532502), we get a palindrome (556767655).

The spelling of 205235153 in words is "two hundred five million, two hundred thirty-five thousand, one hundred fifty-three".