3521003 has 4 divisors (see below), whose sum is σ = 3557400. Its totient is φ = 3484608.

The previous prime is 3520999. The next prime is 3521029. The reversal of 3521003 is 3001253.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3521003 - 2² = 3520999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3521033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18053 + ... + 18246.

It is an arithmetic number, because the mean of its divisors is an integer number (889350).

Almost surely, 2^3521003 is an apocalyptic number.

3521003 is a deficient number, since it is larger than the sum of its proper divisors (36397).

3521003 is an equidigital number, since it uses as much as digits as its factorization.

3521003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36396.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 3521003 is about 1876.4335852889. The cubic root of 3521003 is about 152.1325453967.

Adding to 3521003 its reverse (3001253), we get a palindrome (6522256).

The spelling of 3521003 in words is "three million, five hundred twenty-one thousand, three".