1055220484489 has 2 divisors, whose sum is σ = 1055220484490. Its totient is φ = 1055220484488.

The previous prime is 1055220484459. The next prime is 1055220484499. The reversal of 1055220484489 is 9844840225501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 922147281225 + 133073203264 = 960285^2 + 364792^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055220484489 - 2⁵ = 1055220484457 is a prime.

It is a super-2 number, since 2×1055220484489² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055220484429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527610242244 + 527610242245.

It is an arithmetic number, because the mean of its divisors is an integer number (527610242245).

Almost surely, 2^{1055220484489} is an apocalyptic number.

It is an amenable number.

1055220484489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055220484489 is an equidigital number, since it uses as much as digits as its factorization.

1055220484489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3686400, while the sum is 52.

The spelling of 1055220484489 in words is "one trillion, fifty-five billion, two hundred twenty million, four hundred eighty-four thousand, four hundred eighty-nine".