3403521 has 24 divisors (see below), whose sum is σ = 5541120. Its totient is φ = 1994400.

The previous prime is 3403487. The next prime is 3403523. The reversal of 3403521 is 1253043.

It is not a de Polignac number, because 3403521 - 2⁶ = 3403457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3403494 and 3403503.

It is not an unprimeable number, because it can be changed into a prime (3403523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2515 + ... + 3623.

It is an arithmetic number, because the mean of its divisors is an integer number (230880).

Almost surely, 2^3403521 is an apocalyptic number.

3403521 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3403521 is a deficient number, since it is larger than the sum of its proper divisors (2137599).

3403521 is a wasteful number, since it uses less digits than its factorization.

3403521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 3403521 is about 1844.8634095781. The cubic root of 3403521 is about 150.4213486605.

Adding to 3403521 its reverse (1253043), we get a palindrome (4656564).

The spelling of 3403521 in words is "three million, four hundred three thousand, five hundred twenty-one".