2005543101 has 8 divisors (see below), whose sum is σ = 2683185120. Its totient is φ = 1332464912.

The previous prime is 2005543087. The next prime is 2005543123. The reversal of 2005543101 is 1013455002.

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 2005543101 - 2¹¹ = 2005541053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005543151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139931 + ... + 1141688.

It is an arithmetic number, because the mean of its divisors is an integer number (335398140).

Almost surely, 2^2005543101 is an apocalyptic number.

It is an amenable number.

2005543101 is a deficient number, since it is larger than the sum of its proper divisors (677642019).

2005543101 is a wasteful number, since it uses less digits than its factorization.

2005543101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281915.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2005543101 is about 44783.2904217633. The cubic root of 2005543101 is about 1261.0839544780.

Adding to 2005543101 its reverse (1013455002), we get a palindrome (3018998103).

The spelling of 2005543101 in words is "two billion, five million, five hundred forty-three thousand, one hundred one".