205054963 has 4 divisors (see below), whose sum is σ = 205223040. Its totient is φ = 204886888.

The previous prime is 205054961. The next prime is 205054991. The reversal of 205054963 is 369450502.

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

It is a cyclic number.

It is not a de Polignac number, because 205054963 - 2¹ = 205054961 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (205054961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82195 + ... + 84652.

It is an arithmetic number, because the mean of its divisors is an integer number (51305760).

Almost surely, 2^205054963 is an apocalyptic number.

205054963 is a deficient number, since it is larger than the sum of its proper divisors (168077).

205054963 is a wasteful number, since it uses less digits than its factorization.

205054963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168076.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 205054963 is about 14319.7403258579. The cubic root of 205054963 is about 589.6895455653.

The spelling of 205054963 in words is "two hundred five million, fifty-four thousand, nine hundred sixty-three".