55244447 has 2 divisors, whose sum is σ = 55244448. Its totient is φ = 55244446.

The previous prime is 55244437. The next prime is 55244471. The reversal of 55244447 is 74444255.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55244447 - 2¹⁰ = 55243423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55244417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27622223 + 27622224.

It is an arithmetic number, because the mean of its divisors is an integer number (27622224).

Almost surely, 2^55244447 is an apocalyptic number.

55244447 is a deficient number, since it is larger than the sum of its proper divisors (1).

55244447 is an equidigital number, since it uses as much as digits as its factorization.

55244447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89600, while the sum is 35.

The square root of 55244447 is about 7432.6608290706. The cubic root of 55244447 is about 380.8578197010.

The spelling of 55244447 in words is "fifty-five million, two hundred forty-four thousand, four hundred forty-seven".