3521881 has 8 divisors (see below), whose sum is σ = 3857184. Its totient is φ = 3189120.

The previous prime is 3521867. The next prime is 3521909. The reversal of 3521881 is 1881253.

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

It is not a de Polignac number, because 3521881 - 2⁷ = 3521753 is a prime.

It is a super-2 number, since 2×3521881² = 24807291556322, which contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3430 + ... + 4336.

It is an arithmetic number, because the mean of its divisors is an integer number (482148).

Almost surely, 2^3521881 is an apocalyptic number.

It is an amenable number.

3521881 is a deficient number, since it is larger than the sum of its proper divisors (335303).

3521881 is a wasteful number, since it uses less digits than its factorization.

3521881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271.

The product of its digits is 1920, while the sum is 28.

The square root of 3521881 is about 1876.6675251626. The cubic root of 3521881 is about 152.1451896417.

The spelling of 3521881 in words is "three million, five hundred twenty-one thousand, eight hundred eighty-one".