205011053 has 4 divisors (see below), whose sum is σ = 220781148. Its totient is φ = 189240960.

The previous prime is 205011031. The next prime is 205011061. The reversal of 205011053 is 350110502.

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 31114084 + 173896969 = 5578^2 + 13187^2 .

It is a cyclic number.

It is not a de Polignac number, because 205011053 - 2¹⁸ = 204748909 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 (205011013) 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 3 ways as a sum of consecutive naturals, for example, 7885028 + ... + 7885053.

It is an arithmetic number, because the mean of its divisors is an integer number (55195287).

Almost surely, 2^205011053 is an apocalyptic number.

It is an amenable number.

205011053 is a deficient number, since it is larger than the sum of its proper divisors (15770095).

205011053 is a wasteful number, since it uses less digits than its factorization.

205011053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15770094.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 205011053 is about 14318.2070455766. The cubic root of 205011053 is about 589.6474509711.

Adding to 205011053 its reverse (350110502), we get a palindrome (555121555).

The spelling of 205011053 in words is "two hundred five million, eleven thousand, fifty-three".