55043963573 has 2 divisors, whose sum is σ = 55043963574. Its totient is φ = 55043963572.

The previous prime is 55043963563. The next prime is 55043963657. The reversal of 55043963573 is 37536934055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51536718289 + 3507245284 = 227017^2 + 59222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55043963573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55043963563) 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, 27521981786 + 27521981787.

It is an arithmetic number, because the mean of its divisors is an integer number (27521981787).

Almost surely, 2^55043963573 is an apocalyptic number.

It is an amenable number.

55043963573 is a deficient number, since it is larger than the sum of its proper divisors (1).

55043963573 is an equidigital number, since it uses as much as digits as its factorization.

55043963573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103000, while the sum is 50.

The spelling of 55043963573 in words is "fifty-five billion, forty-three million, nine hundred sixty-three thousand, five hundred seventy-three".