205153433 has 8 divisors (see below), whose sum is σ = 220198248. Its totient is φ = 190439424.

The previous prime is 205153411. The next prime is 205153447. The reversal of 205153433 is 334351502.

It can be written as a sum of positive squares in 4 ways, for example, as 6822544 + 198330889 = 2612^2 + 14083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205153433 - 2⁸ = 205153177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205153483) 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 7 ways as a sum of consecutive naturals, for example, 81416 + ... + 83897.

It is an arithmetic number, because the mean of its divisors is an integer number (27524781).

Almost surely, 2^205153433 is an apocalyptic number.

It is an amenable number.

205153433 is a deficient number, since it is larger than the sum of its proper divisors (15044815).

205153433 is a wasteful number, since it uses less digits than its factorization.

205153433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165403.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 205153433 is about 14323.1781738551. The cubic root of 205153433 is about 589.7839225987.

The spelling of 205153433 in words is "two hundred five million, one hundred fifty-three thousand, four hundred thirty-three".