205115353 has 8 divisors (see below), whose sum is σ = 221279688. Its totient is φ = 189406464.

The previous prime is 205115303. The next prime is 205115359. The reversal of 205115353 is 353511502.

It can be written as a sum of positive squares in 4 ways, for example, as 43520409 + 161594944 = 6597^2 + 12712^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205115353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205115359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112926 + ... + 114727.

It is an arithmetic number, because the mean of its divisors is an integer number (27659961).

Almost surely, 2^205115353 is an apocalyptic number.

It is an amenable number.

205115353 is a deficient number, since it is larger than the sum of its proper divisors (16164335).

205115353 is a wasteful number, since it uses less digits than its factorization.

205115353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227723.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 205115353 is about 14321.8487982523. The cubic root of 205115353 is about 589.7474289994.

Adding to 205115353 its reverse (353511502), we get a palindrome (558626855).

The spelling of 205115353 in words is "two hundred five million, one hundred fifteen thousand, three hundred fifty-three".