2003523 has 8 divisors (see below), whose sum is σ = 2763600. Its totient is φ = 1289568.

The previous prime is 2003509. The next prime is 2003557. The reversal of 2003523 is 3253002.

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

It is not a de Polignac number, because 2003523 - 2⁶ = 2003459 is a prime.

It is a d-powerful number, because it can be written as 2² + 0 + 0 + 3⁷ + 5⁸ + 2¹⁴ + 3¹³ .

It is not an unprimeable number, because it can be changed into a prime (2003593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11428 + ... + 11601.

It is an arithmetic number, because the mean of its divisors is an integer number (345450).

2^2003523 is an apocalyptic number.

2003523 is a deficient number, since it is larger than the sum of its proper divisors (760077).

2003523 is a wasteful number, since it uses less digits than its factorization.

2003523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23061.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 2003523 is about 1415.4585829335. The cubic root of 2003523 is about 126.0660399586.

Adding to 2003523 its reverse (3253002), we get a palindrome (5256525).

The spelling of 2003523 in words is "two million, three thousand, five hundred twenty-three".