55144424227 has 2 divisors, whose sum is σ = 55144424228. Its totient is φ = 55144424226.

The previous prime is 55144424221. The next prime is 55144424267. The reversal of 55144424227 is 72242444155.

It is a happy number.

It is an a-pointer prime, because the next prime (55144424267) can be obtained adding 55144424227 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55144424227 - 2³ = 55144424219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55144424227.

It is not a weakly prime, because it can be changed into another prime (55144424221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27572212113 + 27572212114.

It is an arithmetic number, because the mean of its divisors is an integer number (27572212114).

Almost surely, 2^55144424227 is an apocalyptic number.

55144424227 is a deficient number, since it is larger than the sum of its proper divisors (1).

55144424227 is an equidigital number, since it uses as much as digits as its factorization.

55144424227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 358400, while the sum is 40.

The spelling of 55144424227 in words is "fifty-five billion, one hundred forty-four million, four hundred twenty-four thousand, two hundred twenty-seven".