3549521 has 16 divisors (see below), whose sum is σ = 3932544. Its totient is φ = 3193344.

The previous prime is 3549517. The next prime is 3549547. The reversal of 3549521 is 1259453.

It is a cyclic number.

It is not a de Polignac number, because 3549521 - 2² = 3549517 is a prime.

It is a Duffinian number.

3549521 is a Rhonda number in base 8.

Its product of digits (5400) is a multiple of the sum of its prime divisors (200).

It is not an unprimeable number, because it can be changed into a prime (3549421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36545 + ... + 36641.

It is an arithmetic number, because the mean of its divisors is an integer number (245784).

Almost surely, 2^3549521 is an apocalyptic number.

It is an amenable number.

3549521 is a deficient number, since it is larger than the sum of its proper divisors (383023).

3549521 is a wasteful number, since it uses less digits than its factorization.

3549521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200.

The product of its digits is 5400, while the sum is 29.

The square root of 3549521 is about 1884.0172504518. The cubic root of 3549521 is about 152.5421687560.

The spelling of 3549521 in words is "three million, five hundred forty-nine thousand, five hundred twenty-one".