5541221 has 8 divisors (see below), whose sum is σ = 6440640. Its totient is φ = 4668768.

The previous prime is 5541187. The next prime is 5541251. The reversal of 5541221 is 1221455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5541221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5541193 and 5541202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5541251) 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 in 7 ways as a sum of consecutive naturals, for example, 6296 + ... + 7121.

It is an arithmetic number, because the mean of its divisors is an integer number (805080).

Almost surely, 2^5541221 is an apocalyptic number.

It is an amenable number.

5541221 is a deficient number, since it is larger than the sum of its proper divisors (899419).

5541221 is a wasteful number, since it uses less digits than its factorization.

5541221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13483.

The product of its digits is 400, while the sum is 20.

The square root of 5541221 is about 2353.9798214938. The cubic root of 5541221 is about 176.9573029466.

Adding to 5541221 its reverse (1221455), we get a palindrome (6762676).

The spelling of 5541221 in words is "five million, five hundred forty-one thousand, two hundred twenty-one".