3601521 has 24 divisors (see below), whose sum is σ = 6487104. Its totient is φ = 1870560.

The previous prime is 3601517. The next prime is 3601523. The reversal of 3601521 is 1251063.

It is not a de Polignac number, because 3601521 - 2² = 3601517 is a prime.

It is a Curzon number.

3601521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3601494 and 3601503.

It is not an unprimeable number, because it can be changed into a prime (3601523) 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 23 ways as a sum of consecutive naturals, for example, 1906 + ... + 3291.

It is an arithmetic number, because the mean of its divisors is an integer number (270296).

Almost surely, 2^3601521 is an apocalyptic number.

It is an amenable number.

3601521 is a deficient number, since it is larger than the sum of its proper divisors (2885583).

3601521 is a wasteful number, since it uses less digits than its factorization.

3601521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221 (or 5218 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 3601521 is about 1897.7673724669. The cubic root of 3601521 is about 153.2834678220.

Adding to 3601521 its reverse (1251063), we get a palindrome (4852584).

It can be divided in two parts, 360 and 1521, that added together give a palindrome (1881).

The spelling of 3601521 in words is "three million, six hundred one thousand, five hundred twenty-one".