205450556 has 12 divisors (see below), whose sum is σ = 361110120. Its totient is φ = 102276240.

The previous prime is 205450519. The next prime is 205450573. The reversal of 205450556 is 655054502.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 111230 + ... + 113061.

It is an arithmetic number, because the mean of its divisors is an integer number (30092510).

Almost surely, 2^205450556 is an apocalyptic number.

It is an amenable number.

205450556 is a deficient number, since it is larger than the sum of its proper divisors (155659564).

205450556 is a wasteful number, since it uses less digits than its factorization.

205450556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224524 (or 224522 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 205450556 is about 14333.5465255463. The cubic root of 205450556 is about 590.0685125839.

The spelling of 205450556 in words is "two hundred five million, four hundred fifty thousand, five hundred fifty-six".