3543521 has 4 divisors (see below), whose sum is σ = 3547392. Its totient is φ = 3539652.

The previous prime is 3543511. The next prime is 3543523. The reversal of 3543521 is 1253453.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3543521 - 2¹⁴ = 3527137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3543523) 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, 296 + ... + 2678.

It is an arithmetic number, because the mean of its divisors is an integer number (886848).

Almost surely, 2^3543521 is an apocalyptic number.

It is an amenable number.

3543521 is a deficient number, since it is larger than the sum of its proper divisors (3871).

3543521 is a wasteful number, since it uses less digits than its factorization.

3543521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870.

The product of its digits is 1800, while the sum is 23.

The square root of 3543521 is about 1882.4242348631. The cubic root of 3543521 is about 152.4561694336.

Adding to 3543521 its reverse (1253453), we get a palindrome (4796974).

The spelling of 3543521 in words is "three million, five hundred forty-three thousand, five hundred twenty-one".