1055550505993 has 2 divisors, whose sum is σ = 1055550505994. Its totient is φ = 1055550505992.

The previous prime is 1055550505967. The next prime is 1055550506051. The reversal of 1055550505993 is 3995050555501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1006065168784 + 49485337209 = 1003028^2 + 222453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055550505993 - 2²⁵ = 1055516951561 is a prime.

It is a super-2 number, since 2×1055550505993² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1055550505993.

It is not a weakly prime, because it can be changed into another prime (1055550500993) 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, 527775252996 + 527775252997.

It is an arithmetic number, because the mean of its divisors is an integer number (527775252997).

Almost surely, 2^{1055550505993} is an apocalyptic number.

It is an amenable number.

1055550505993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055550505993 is an equidigital number, since it uses as much as digits as its factorization.

1055550505993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3796875, while the sum is 52.

The spelling of 1055550505993 in words is "one trillion, fifty-five billion, five hundred fifty million, five hundred five thousand, nine hundred ninety-three".