55227420380651 has 2 divisors, whose sum is σ = 55227420380652. Its totient is φ = 55227420380650.

The previous prime is 55227420380497. The next prime is 55227420380659. The reversal of 55227420380651 is 15608302472255.

It is a happy number.

55227420380651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55227420380651 is a prime.

It is a super-3 number, since 3×55227420380651³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55227420380651.

It is not a weakly prime, because it can be changed into another prime (55227420380659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27613710190325 + 27613710190326.

It is an arithmetic number, because the mean of its divisors is an integer number (27613710190326).

Almost surely, 2^{55227420380651} is an apocalyptic number.

55227420380651 is a deficient number, since it is larger than the sum of its proper divisors (1).

55227420380651 is an equidigital number, since it uses as much as digits as its factorization.

55227420380651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 55227420380651 in words is "fifty-five trillion, two hundred twenty-seven billion, four hundred twenty million, three hundred eighty thousand, six hundred fifty-one".