5540443 has 2 divisors, whose sum is σ = 5540444. Its totient is φ = 5540442.

The previous prime is 5540441. The next prime is 5540449. The reversal of 5540443 is 3440455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5540443 - 2¹ = 5540441 is a prime.

Together with 5540441, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5540441) 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, 2770221 + 2770222.

It is an arithmetic number, because the mean of its divisors is an integer number (2770222).

Almost surely, 2^5540443 is an apocalyptic number.

5540443 is a deficient number, since it is larger than the sum of its proper divisors (1).

5540443 is an equidigital number, since it uses as much as digits as its factorization.

5540443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 5540443 is about 2353.8145636392. The cubic root of 5540443 is about 176.9490208234.

Adding to 5540443 its reverse (3440455), we get a palindrome (8980898).

It can be divided in two parts, 5540 and 443, that multiplied together give a triangular number (2454220 = T₂₂₁₅).

The spelling of 5540443 in words is "five million, five hundred forty thousand, four hundred forty-three".