3520549 has 2 divisors, whose sum is σ = 3520550. Its totient is φ = 3520548.

The previous prime is 3520537. The next prime is 3520579. The reversal of 3520549 is 9450253.

3520549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3441025 + 79524 = 1855^2 + 282^2 .

It is an emirp because it is prime and its reverse (9450253) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3520549 is a prime.

It is a super-2 number, since 2×3520549² = 24788530522802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3520519) 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, 1760274 + 1760275.

It is an arithmetic number, because the mean of its divisors is an integer number (1760275).

Almost surely, 2^3520549 is an apocalyptic number.

It is an amenable number.

3520549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3520549 is an equidigital number, since it uses as much as digits as its factorization.

3520549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 3520549 is about 1876.3126072166. The cubic root of 3520549 is about 152.1260064318.

The spelling of 3520549 in words is "three million, five hundred twenty thousand, five hundred forty-nine".