1055220243157 has 2 divisors, whose sum is σ = 1055220243158. Its totient is φ = 1055220243156.

The previous prime is 1055220243139. The next prime is 1055220243169. The reversal of 1055220243157 is 7513420225501.

1055220243157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 529574942961 + 525645300196 = 727719^2 + 725014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055220243157 - 2¹⁹ = 1055219718869 is a prime.

It is a super-2 number, since 2×1055220243157² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055220243107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527610121578 + 527610121579.

It is an arithmetic number, because the mean of its divisors is an integer number (527610121579).

Almost surely, 2^{1055220243157} is an apocalyptic number.

It is an amenable number.

1055220243157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055220243157 is an equidigital number, since it uses as much as digits as its factorization.

1055220243157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84000, while the sum is 37.

Adding to 1055220243157 its reverse (7513420225501), we get a palindrome (8568640468658).

The spelling of 1055220243157 in words is "one trillion, fifty-five billion, two hundred twenty million, two hundred forty-three thousand, one hundred fifty-seven".