3536521 has 4 divisors (see below), whose sum is σ = 3658500. Its totient is φ = 3414544.

The previous prime is 3536513. The next prime is 3536539. The reversal of 3536521 is 1256353.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1256353 = 7 ⋅179479.

It can be written as a sum of positive squares in 2 ways, for example, as 1177225 + 2359296 = 1085^2 + 1536^2 .

It is a cyclic number.

It is not a de Polignac number, because 3536521 - 2³ = 3536513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3536501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60946 + ... + 61003.

It is an arithmetic number, because the mean of its divisors is an integer number (914625).

Almost surely, 2^3536521 is an apocalyptic number.

It is an amenable number.

3536521 is a deficient number, since it is larger than the sum of its proper divisors (121979).

3536521 is a wasteful number, since it uses less digits than its factorization.

3536521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121978.

The product of its digits is 2700, while the sum is 25.

The square root of 3536521 is about 1880.5640111413. The cubic root of 3536521 is about 152.3557141066.

The spelling of 3536521 in words is "three million, five hundred thirty-six thousand, five hundred twenty-one".