55305443 has 2 divisors, whose sum is σ = 55305444. Its totient is φ = 55305442.

The previous prime is 55305431. The next prime is 55305461. The reversal of 55305443 is 34450355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55305443 - 2⁴ = 55305427 is a prime.

It is not a weakly prime, because it can be changed into another prime (55305413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27652721 + 27652722.

It is an arithmetic number, because the mean of its divisors is an integer number (27652722).

Almost surely, 2^55305443 is an apocalyptic number.

55305443 is a deficient number, since it is larger than the sum of its proper divisors (1).

55305443 is an equidigital number, since it uses as much as digits as its factorization.

55305443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 55305443 is about 7436.7629382682. The cubic root of 55305443 is about 380.9979379106.

Adding to 55305443 its reverse (34450355), we get a palindrome (89755798).

The spelling of 55305443 in words is "fifty-five million, three hundred five thousand, four hundred forty-three".