205123052 has 6 divisors (see below), whose sum is σ = 358965348. Its totient is φ = 102561524.

The previous prime is 205123049. The next prime is 205123073. The reversal of 205123052 is 250321502.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 25640378 + ... + 25640385.

It is an arithmetic number, because the mean of its divisors is an integer number (59827558).

Almost surely, 2^205123052 is an apocalyptic number.

It is an amenable number.

205123052 is a deficient number, since it is larger than the sum of its proper divisors (153842296).

205123052 is a wasteful number, since it uses less digits than its factorization.

205123052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51280767 (or 51280765 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 205123052 is about 14322.1175808607. The cubic root of 205123052 is about 589.7548076258.

Adding to 205123052 its reverse (250321502), we get a palindrome (455444554).

The spelling of 205123052 in words is "two hundred five million, one hundred twenty-three thousand, fifty-two".