3521224 has 32 divisors (see below), whose sum is σ = 7606080. Its totient is φ = 1497024.

The previous prime is 3521201. The next prime is 3521237. The reversal of 3521224 is 4221253.

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, 12574 + ... + 12850.

It is an arithmetic number, because the mean of its divisors is an integer number (237690).

Almost surely, 2^3521224 is an apocalyptic number.

It is an amenable number.

3521224 is an abundant number, since it is smaller than the sum of its proper divisors (4084856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3521224 is a wasteful number, since it uses less digits than its factorization.

3521224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 513 counting only the distinct ones).

The product of its digits is 480, while the sum is 19.

The square root of 3521224 is about 1876.4924726734. The cubic root of 3521224 is about 152.1357282577.

Adding to 3521224 its reverse (4221253), we get a palindrome (7742477).

The spelling of 3521224 in words is "three million, five hundred twenty-one thousand, two hundred twenty-four".