3561003 has 10 divisors (see below), whose sum is σ = 5319644. Its totient is φ = 2373948.

The previous prime is 3560993. The next prime is 3561023. The reversal of 3561003 is 3001653.

It is not a de Polignac number, because 3561003 - 2⁴ = 3560987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3561023) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21901 + ... + 22062.

Almost surely, 2^3561003 is an apocalyptic number.

3561003 is a deficient number, since it is larger than the sum of its proper divisors (1758641).

3561003 is an equidigital number, since it uses as much as digits as its factorization.

3561003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43975 (or 43966 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 3561003 is about 1887.0620021610. The cubic root of 3561003 is about 152.7064729907.

Adding to 3561003 its reverse (3001653), we get a palindrome (6562656).

The spelling of 3561003 in words is "three million, five hundred sixty-one thousand, three".