2003115543 has 32 divisors (see below), whose sum is σ = 3140750592. Its totient is φ = 1119552000.

The previous prime is 2003115539. The next prime is 2003115553. The reversal of 2003115543 is 3455113002.

It is not a de Polignac number, because 2003115543 - 2² = 2003115539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003115553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 713743 + ... + 716543.

It is an arithmetic number, because the mean of its divisors is an integer number (98148456).

Almost surely, 2^2003115543 is an apocalyptic number.

2003115543 is a deficient number, since it is larger than the sum of its proper divisors (1137635049).

2003115543 is a wasteful number, since it uses less digits than its factorization.

2003115543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2003115543 is about 44756.1788248282. The cubic root of 2003115543 is about 1260.5749335132.

Adding to 2003115543 its reverse (3455113002), we get a palindrome (5458228545).

The spelling of 2003115543 in words is "two billion, three million, one hundred fifteen thousand, five hundred forty-three".