3548221 has 2 divisors, whose sum is σ = 3548222. Its totient is φ = 3548220.

The previous prime is 3548219. The next prime is 3548261. The reversal of 3548221 is 1228453.

3548221 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., 2576025 + 972196 = 1605^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 3548221 - 2¹ = 3548219 is a prime.

Together with 3548219, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 3¹³ + 5⁹ + 4 + 8³ + 2⁷ + 2⁷ + 1 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3548261) 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, 1774110 + 1774111.

It is an arithmetic number, because the mean of its divisors is an integer number (1774111).

Almost surely, 2^3548221 is an apocalyptic number.

It is an amenable number.

3548221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3548221 is an equidigital number, since it uses as much as digits as its factorization.

3548221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 3548221 is about 1883.6722113998. The cubic root of 3548221 is about 152.5235437985.

The spelling of 3548221 in words is "three million, five hundred forty-eight thousand, two hundred twenty-one".