205455641 has 8 divisors (see below), whose sum is σ = 210032160. Its totient is φ = 200915712.

The previous prime is 205455637. The next prime is 205455643. The reversal of 205455641 is 146554502.

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

It is a cyclic number.

It is not a de Polignac number, because 205455641 - 2² = 205455637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205455598 and 205455607.

It is not an unprimeable number, because it can be changed into a prime (205455643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2366 + ... + 20408.

It is an arithmetic number, because the mean of its divisors is an integer number (26254020).

Almost surely, 2^205455641 is an apocalyptic number.

It is an amenable number.

205455641 is a deficient number, since it is larger than the sum of its proper divisors (4576519).

205455641 is a wasteful number, since it uses less digits than its factorization.

205455641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18295.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 205455641 is about 14333.7239055313. The cubic root of 205455641 is about 590.0733807035.

The spelling of 205455641 in words is "two hundred five million, four hundred fifty-five thousand, six hundred forty-one".