550005555557 has 2 divisors, whose sum is σ = 550005555558. Its totient is φ = 550005555556.

The previous prime is 550005555479. The next prime is 550005555569. The reversal of 550005555557 is 755555500055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497576462881 + 52429092676 = 705391^2 + 228974^2 .

It is a cyclic number.

It is not a de Polignac number, because 550005555557 - 2³⁴ = 532825686373 is a prime.

It is a super-2 number, since 2×550005555557² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550005555457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275002777778 + 275002777779.

It is an arithmetic number, because the mean of its divisors is an integer number (275002777779).

Almost surely, 2^550005555557 is an apocalyptic number.

It is an amenable number.

550005555557 is a deficient number, since it is larger than the sum of its proper divisors (1).

550005555557 is an equidigital number, since it uses as much as digits as its factorization.

550005555557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2734375, while the sum is 47.

The spelling of 550005555557 in words is "five hundred fifty billion, five million, five hundred fifty-five thousand, five hundred fifty-seven".