3521481 has 4 divisors (see below), whose sum is σ = 4695312. Its totient is φ = 2347652.

The previous prime is 3521473. The next prime is 3521489. The reversal of 3521481 is 1841253.

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 an interprime number because it is at equal distance from previous prime (3521473) and next prime (3521489).

It is a cyclic number.

It is not a de Polignac number, because 3521481 - 2³ = 3521473 is a prime.

It is a super-2 number, since 2×3521481² = 24801656866722, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3521489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586911 + ... + 586916.

It is an arithmetic number, because the mean of its divisors is an integer number (1173828).

Almost surely, 2^3521481 is an apocalyptic number.

It is an amenable number.

3521481 is a deficient number, since it is larger than the sum of its proper divisors (1173831).

3521481 is a wasteful number, since it uses less digits than its factorization.

3521481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173830.

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

The square root of 3521481 is about 1876.5609502492. The cubic root of 3521481 is about 152.1394294262.

The spelling of 3521481 in words is "three million, five hundred twenty-one thousand, four hundred eighty-one".