555945549557 has 2 divisors, whose sum is σ = 555945549558. Its totient is φ = 555945549556.

The previous prime is 555945549503. The next prime is 555945549583. The reversal of 555945549557 is 755945549555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 548941700836 + 7003848721 = 740906^2 + 83689^2 .

It is a cyclic number.

It is not a de Polignac number, because 555945549557 - 2²² = 555941355253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555945549587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277972774778 + 277972774779.

It is an arithmetic number, because the mean of its divisors is an integer number (277972774779).

Almost surely, 2^555945549557 is an apocalyptic number.

It is an amenable number.

555945549557 is a deficient number, since it is larger than the sum of its proper divisors (1).

555945549557 is an equidigital number, since it uses as much as digits as its factorization.

555945549557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 708750000, while the sum is 68.

The spelling of 555945549557 in words is "five hundred fifty-five billion, nine hundred forty-five million, five hundred forty-nine thousand, five hundred fifty-seven".