205245538 has 4 divisors (see below), whose sum is σ = 307868310. Its totient is φ = 102622768.

The previous prime is 205245529. The next prime is 205245571. The reversal of 205245538 is 835542502.

205245538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 168558289 + 36687249 = 12983^2 + 6057^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51311383 + ... + 51311386.

Almost surely, 2^205245538 is an apocalyptic number.

205245538 is a deficient number, since it is larger than the sum of its proper divisors (102622772).

205245538 is a wasteful number, since it uses less digits than its factorization.

205245538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102622771.

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 205245538 is about 14326.3930561743. The cubic root of 205245538 is about 589.8721718665.

It can be divided in two parts, 20524 and 5538, that added together give a palindrome (26062).

The spelling of 205245538 in words is "two hundred five million, two hundred forty-five thousand, five hundred thirty-eight".