3521885 has 8 divisors (see below), whose sum is σ = 4284600. Its totient is φ = 2778624.

The previous prime is 3521867. The next prime is 3521909. The reversal of 3521885 is 5881253.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 58564 + 3463321 = 242^2 + 1861^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3521885 - 2¹⁴ = 3505501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4460 + ... + 5189.

It is an arithmetic number, because the mean of its divisors is an integer number (535575).

Almost surely, 2^3521885 is an apocalyptic number.

It is an amenable number.

3521885 is a deficient number, since it is larger than the sum of its proper divisors (762715).

3521885 is an equidigital number, since it uses as much as digits as its factorization.

3521885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9727.

The product of its digits is 9600, while the sum is 32.

The square root of 3521885 is about 1876.6685908812. The cubic root of 3521885 is about 152.1452472416.

The spelling of 3521885 in words is "three million, five hundred twenty-one thousand, eight hundred eighty-five".