555555555555557 has 2 divisors, whose sum is σ = 555555555555558. Its totient is φ = 555555555555556.

The previous prime is 555555555555529. The next prime is 555555555555569. The reversal of 555555555555557 is 755555555555555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 508361527171876 + 47194028383681 = 22546874^2 + 6869791^2 .

It is a cyclic number.

It is not a de Polignac number, because 555555555555557 - 2²² = 555555551361253 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 (555555555555157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277777777777778 + 277777777777779.

It is an arithmetic number, because the mean of its divisors is an integer number (277777777777779).

Almost surely, 2^{555555555555557} is an apocalyptic number.

It is an amenable number.

555555555555557 is a deficient number, since it is larger than the sum of its proper divisors (1).

555555555555557 is an equidigital number, since it uses as much as digits as its factorization.

555555555555557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42724609375, while the sum is 77.

The spelling of 555555555555557 in words is "five hundred fifty-five trillion, five hundred fifty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-seven".