55381860727201 has 2 divisors, whose sum is σ = 55381860727202. Its totient is φ = 55381860727200.

The previous prime is 55381860727159. The next prime is 55381860727213. The reversal of 55381860727201 is 10272706818355.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42839957210176 + 12541903517025 = 6545224^2 + 3541455^2 .

It is a cyclic number.

It is not a de Polignac number, because 55381860727201 - 2⁴¹ = 53182837471649 is a prime.

It is not a weakly prime, because it can be changed into another prime (55381860727231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27690930363600 + 27690930363601.

It is an arithmetic number, because the mean of its divisors is an integer number (27690930363601).

Almost surely, 2^{55381860727201} is an apocalyptic number.

It is an amenable number.

55381860727201 is a deficient number, since it is larger than the sum of its proper divisors (1).

55381860727201 is an equidigital number, since it uses as much as digits as its factorization.

55381860727201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 55381860727201 in words is "fifty-five trillion, three hundred eighty-one billion, eight hundred sixty million, seven hundred twenty-seven thousand, two hundred one".