3521841 has 4 divisors (see below), whose sum is σ = 4695792. Its totient is φ = 2347892.

The previous prime is 3521831. The next prime is 3521857. The reversal of 3521841 is 1481253.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3521841 - 2¹¹ = 3519793 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3521831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586971 + ... + 586976.

It is an arithmetic number, because the mean of its divisors is an integer number (1173948).

Almost surely, 2^3521841 is an apocalyptic number.

It is an amenable number.

3521841 is a deficient number, since it is larger than the sum of its proper divisors (1173951).

3521841 is a wasteful number, since it uses less digits than its factorization.

3521841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173950.

The product of its digits is 960, while the sum is 24.

The square root of 3521841 is about 1876.6568679436. The cubic root of 3521841 is about 152.1446136398.

The spelling of 3521841 in words is "three million, five hundred twenty-one thousand, eight hundred forty-one".