5550545401081 has 2 divisors, whose sum is σ = 5550545401082. Its totient is φ = 5550545401080.

The previous prime is 5550545401073. The next prime is 5550545401153. The reversal of 5550545401081 is 1801045450555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4352998195456 + 1197547205625 = 2086384^2 + 1094325^2 .

It is a cyclic number.

It is not a de Polignac number, because 5550545401081 - 2³ = 5550545401073 is a prime.

It is a super-2 number, since 2×5550545401081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5550545401061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775272700540 + 2775272700541.

It is an arithmetic number, because the mean of its divisors is an integer number (2775272700541).

Almost surely, 2^{5550545401081} is an apocalyptic number.

It is an amenable number.

5550545401081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550545401081 is an equidigital number, since it uses as much as digits as its factorization.

5550545401081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400000, while the sum is 43.

The spelling of 5550545401081 in words is "five trillion, five hundred fifty billion, five hundred forty-five million, four hundred one thousand, eighty-one".