3240521 has 4 divisors (see below), whose sum is σ = 3244692. Its totient is φ = 3236352.

The previous prime is 3240499. The next prime is 3240527. The reversal of 3240521 is 1250423.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1250423 = 563 ⋅2221.

It can be written as a sum of positive squares in 2 ways, for example, as 3200521 + 40000 = 1789^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 3240521 - 2¹⁸ = 2978377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3240521.

It is not an unprimeable number, because it can be changed into a prime (3240527) 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, 536 + ... + 2601.

It is an arithmetic number, because the mean of its divisors is an integer number (811173).

Almost surely, 2^3240521 is an apocalyptic number.

It is an amenable number.

3240521 is a deficient number, since it is larger than the sum of its proper divisors (4171).

3240521 is a wasteful number, since it uses less digits than its factorization.

3240521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 3240521 is about 1800.1447164048. The cubic root of 3240521 is about 147.9806554946.

Adding to 3240521 its reverse (1250423), we get a palindrome (4490944).

The spelling of 3240521 in words is "three million, two hundred forty thousand, five hundred twenty-one".