205054047 has 24 divisors (see below), whose sum is σ = 324350208. Its totient is φ = 123800400.

The previous prime is 205054043. The next prime is 205054049. The reversal of 205054047 is 740450502.

205054047 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 205054047 - 2² = 205054043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205054047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205054043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23008 + ... + 30650.

It is an arithmetic number, because the mean of its divisors is an integer number (13514592).

Almost surely, 2^205054047 is an apocalyptic number.

205054047 is a deficient number, since it is larger than the sum of its proper divisors (119296161).

205054047 is a wasteful number, since it uses less digits than its factorization.

205054047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7931 (or 7928 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 205054047 is about 14319.7083420019. The cubic root of 205054047 is about 589.6886674976.

The spelling of 205054047 in words is "two hundred five million, fifty-four thousand, forty-seven".