205135051 has 10 divisors (see below), whose sum is σ = 225663260. Its totient is φ = 186473100.

The previous prime is 205135033. The next prime is 205135093. The reversal of 205135051 is 150531502.

205135051 = 126² + 127² + ... + 851².

205135051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205135051 - 2²¹ = 203037899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205135031) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7636 + ... + 21646.

It is an arithmetic number, because the mean of its divisors is an integer number (22566326).

Almost surely, 2^205135051 is an apocalyptic number.

205135051 is a deficient number, since it is larger than the sum of its proper divisors (20528209).

205135051 is an frugal number, since it uses more digits than its factorization.

205135051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14055 (or 14022 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 205135051 is about 14322.5364722873. The cubic root of 205135051 is about 589.7663069508.

Adding to 205135051 its reverse (150531502), we get a palindrome (355666553).

The spelling of 205135051 in words is "two hundred five million, one hundred thirty-five thousand, fifty-one".