3521004 has 24 divisors (see below), whose sum is σ = 8648640. Its totient is φ = 1111824.

The previous prime is 3520999. The next prime is 3521029. The reversal of 3521004 is 4001253.

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, 7494 + ... + 7949.

It is an arithmetic number, because the mean of its divisors is an integer number (360360).

Almost surely, 2^3521004 is an apocalyptic number.

It is an amenable number.

3521004 is an abundant number, since it is smaller than the sum of its proper divisors (5127636).

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

3521004 is a wasteful number, since it uses less digits than its factorization.

3521004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15469 (or 15467 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 3521004 is about 1876.4338517518. The cubic root of 3521004 is about 152.1325597991.

Adding to 3521004 its reverse (4001253), we get a palindrome (7522257).

Subtracting 3521004 from its reverse (4001253), we obtain a square (480249 = 693²).

The spelling of 3521004 in words is "three million, five hundred twenty-one thousand, four".