5549381 has 2 divisors, whose sum is σ = 5549382. Its totient is φ = 5549380.

The previous prime is 5549377. The next prime is 5549393. The reversal of 5549381 is 1839455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3740356 + 1809025 = 1934^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 5549381 - 2² = 5549377 is a prime.

It is a super-2 number, since 2×5549381² = 61591258966322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5549281) 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, 2774690 + 2774691.

It is an arithmetic number, because the mean of its divisors is an integer number (2774691).

Almost surely, 2^5549381 is an apocalyptic number.

It is an amenable number.

5549381 is a deficient number, since it is larger than the sum of its proper divisors (1).

5549381 is an equidigital number, since it uses as much as digits as its factorization.

5549381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 5549381 is about 2355.7124187812. The cubic root of 5549381 is about 177.0441227633.

The spelling of 5549381 in words is "five million, five hundred forty-nine thousand, three hundred eighty-one".