5555555557 has 2 divisors, whose sum is σ = 5555555558. Its totient is φ = 5555555556.

The previous prime is 5555555519. The next prime is 5555555563. The reversal of 5555555557 is 7555555555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4012715716 + 1542839841 = 63346^2 + 39279^2 .

It is a cyclic number.

It is not a de Polignac number, because 5555555557 - 2¹⁹ = 5555031269 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5555555567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777777778 + 2777777779.

It is an arithmetic number, because the mean of its divisors is an integer number (2777777779).

Almost surely, 2^5555555557 is an apocalyptic number.

It is an amenable number.

5555555557 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555555557 is an equidigital number, since it uses as much as digits as its factorization.

5555555557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13671875, while the sum is 52.

The square root of 5555555557 is about 74535.5992596826. The cubic root of 5555555557 is about 1771.0976154578.

The spelling of 5555555557 in words is "five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-seven".