2003541 has 8 divisors (see below), whose sum is σ = 2682144. Its totient is φ = 1330320.

The previous prime is 2003509. The next prime is 2003557. The reversal of 2003541 is 1453002.

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

It is not a de Polignac number, because 2003541 - 2⁵ = 2003509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2003541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375 + ... + 2036.

It is an arithmetic number, because the mean of its divisors is an integer number (335268).

2^2003541 is an apocalyptic number.

It is an amenable number.

2003541 is a deficient number, since it is larger than the sum of its proper divisors (678603).

2003541 is a wasteful number, since it uses less digits than its factorization.

2003541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2003541 is about 1415.4649412825. The cubic root of 2003541 is about 126.0664174906.

Adding to 2003541 its reverse (1453002), we get a palindrome (3456543).

It can be divided in two parts, 200 and 3541, that added together give a triangular number (3741 = T₈₆).

The spelling of 2003541 in words is "two million, three thousand, five hundred forty-one".