3516521 has 2 divisors, whose sum is σ = 3516522. Its totient is φ = 3516520.

The previous prime is 3516509. The next prime is 3516533. The reversal of 3516521 is 1256153.

3516521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (3516509) and next prime (3516533).

It can be written as a sum of positive squares in only one way, i.e., 3474496 + 42025 = 1864^2 + 205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3516521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3516551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1758260 + 1758261.

It is an arithmetic number, because the mean of its divisors is an integer number (1758261).

Almost surely, 2^3516521 is an apocalyptic number.

It is an amenable number.

3516521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3516521 is an equidigital number, since it uses as much as digits as its factorization.

3516521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 23.

The square root of 3516521 is about 1875.2389181115. The cubic root of 3516521 is about 152.0679664881.

The spelling of 3516521 in words is "three million, five hundred sixteen thousand, five hundred twenty-one".