205047055 has 4 divisors (see below), whose sum is σ = 246056472. Its totient is φ = 164037640.

The previous prime is 205047049. The next prime is 205047061. The reversal of 205047055 is 550740502.

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

It is an interprime number because it is at equal distance from previous prime (205047049) and next prime (205047061).

It is not a de Polignac number, because 205047055 - 2²³ = 196658447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 20504701 + ... + 20504710.

It is an arithmetic number, because the mean of its divisors is an integer number (61514118).

Almost surely, 2^205047055 is an apocalyptic number.

205047055 is a deficient number, since it is larger than the sum of its proper divisors (41009417).

205047055 is an equidigital number, since it uses as much as digits as its factorization.

205047055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41009416.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 205047055 is about 14319.4642008701. The cubic root of 205047055 is about 589.6819649557.

Adding to 205047055 its reverse (550740502), we get a palindrome (755787557).

The spelling of 205047055 in words is "two hundred five million, forty-seven thousand, fifty-five".