205110133 has 4 divisors (see below), whose sum is σ = 205990668. Its totient is φ = 204229600.

The previous prime is 205110131. The next prime is 205110161. The reversal of 205110133 is 331011502.

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 51523684 + 153586449 = 7178^2 + 12393^2 .

It is a cyclic number.

It is not a de Polignac number, because 205110133 - 2¹ = 205110131 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 (205110131) 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 3 ways as a sum of consecutive naturals, for example, 439918 + ... + 440383.

It is an arithmetic number, because the mean of its divisors is an integer number (51497667).

Almost surely, 2^205110133 is an apocalyptic number.

It is an amenable number.

205110133 is a deficient number, since it is larger than the sum of its proper divisors (880535).

205110133 is an equidigital number, since it uses as much as digits as its factorization.

205110133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880534.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 205110133 is about 14321.6665580511. Note that the first 3 decimals coincide. The cubic root of 205110133 is about 589.7424261109.

Adding to 205110133 its reverse (331011502), we get a palindrome (536121635).

The spelling of 205110133 in words is "two hundred five million, one hundred ten thousand, one hundred thirty-three".