55054987899697 has 2 divisors, whose sum is σ = 55054987899698. Its totient is φ = 55054987899696.

The previous prime is 55054987899683. The next prime is 55054987899707. The reversal of 55054987899697 is 79699878945055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37608795025201 + 17446192874496 = 6132601^2 + 4176864^2 .

It is a cyclic number.

It is not a de Polignac number, because 55054987899697 - 2¹⁵ = 55054987866929 is a prime.

It is not a weakly prime, because it can be changed into another prime (55054987819697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527493949848 + 27527493949849.

It is an arithmetic number, because the mean of its divisors is an integer number (27527493949849).

Almost surely, 2^{55054987899697} is an apocalyptic number.

It is an amenable number.

55054987899697 is a deficient number, since it is larger than the sum of its proper divisors (1).

55054987899697 is an equidigital number, since it uses as much as digits as its factorization.

55054987899697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61725888000, while the sum is 91.

The spelling of 55054987899697 in words is "fifty-five trillion, fifty-four billion, nine hundred eighty-seven million, eight hundred ninety-nine thousand, six hundred ninety-seven".