2001105543 has 8 divisors (see below), whose sum is σ = 2669801328. Its totient is φ = 1333240064.

The previous prime is 2001105539. The next prime is 2001105551. The reversal of 2001105543 is 3455011002.

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 2001105543 - 2² = 2001105539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001105503) 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, 201930 + ... + 211607.

It is an arithmetic number, because the mean of its divisors is an integer number (333725166).

Almost surely, 2^2001105543 is an apocalyptic number.

2001105543 is a deficient number, since it is larger than the sum of its proper divisors (668695785).

2001105543 is a wasteful number, since it uses less digits than its factorization.

2001105543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415153.

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

The square root of 2001105543 is about 44733.7181888562. The cubic root of 2001105543 is about 1260.1531566157.

Adding to 2001105543 its reverse (3455011002), we get a palindrome (5456116545).

The spelling of 2001105543 in words is "two billion, one million, one hundred five thousand, five hundred forty-three".