2091003 has 16 divisors (see below), whose sum is σ = 2885376. Its totient is φ = 1346400.

The previous prime is 2090989. The next prime is 2091053. The reversal of 2091003 is 3001902.

It is not a de Polignac number, because 2091003 - 2¹⁰ = 2089979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2091053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20250 + ... + 20352.

It is an arithmetic number, because the mean of its divisors is an integer number (180336).

2^2091003 is an apocalyptic number.

2091003 is a deficient number, since it is larger than the sum of its proper divisors (794373).

2091003 is a wasteful number, since it uses less digits than its factorization.

2091003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 2091003 is about 1446.0300826746. The cubic root of 2091003 is about 127.8747758061.

Adding to 2091003 its reverse (3001902), we get a palindrome (5092905).

The spelling of 2091003 in words is "two million, ninety-one thousand, three".