3521001 has 16 divisors (see below), whose sum is σ = 5345280. Its totient is φ = 2040720.

The previous prime is 3520999. The next prime is 3521029. The reversal of 3521001 is 1001253.

It is not a de Polignac number, because 3521001 - 2¹ = 3520999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3521071) 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, 1561 + ... + 3078.

It is an arithmetic number, because the mean of its divisors is an integer number (334080).

Almost surely, 2^3521001 is an apocalyptic number.

It is an amenable number.

3521001 is a deficient number, since it is larger than the sum of its proper divisors (1824279).

3521001 is a wasteful number, since it uses less digits than its factorization.

3521001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 3521001 is about 1876.4330523629. The cubic root of 3521001 is about 152.1325165919.

Adding to 3521001 its reverse (1001253), we get a palindrome (4522254).

The spelling of 3521001 in words is "three million, five hundred twenty-one thousand, one".