205554 has 8 divisors (see below), whose sum is σ = 411120. Its totient is φ = 68516.

The previous prime is 205553. The next prime is 205559. The reversal of 205554 is 455502.

205554 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

205554 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 205554.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 205554.

It is not an unprimeable number, because it can be changed into a prime (205553) 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, 17124 + ... + 17135.

It is an arithmetic number, because the mean of its divisors is an integer number (51390).

2²⁰⁵⁵⁵⁴ is an apocalyptic number.

205554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205554 is a wasteful number, since it uses less digits than its factorization.

205554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34264.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 205554 is about 453.3806347872. The cubic root of 205554 is about 59.0167528793.

The spelling of 205554 in words is "two hundred five thousand, five hundred fifty-four".