5550555000581 has 2 divisors, whose sum is σ = 5550555000582. Its totient is φ = 5550555000580.

The previous prime is 5550555000449. The next prime is 5550555000583. The reversal of 5550555000581 is 1850005550555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4316214002500 + 1234340998081 = 2077550^2 + 1111009^2 .

It is a cyclic number.

It is not a de Polignac number, because 5550555000581 - 2⁴² = 1152508489477 is a prime.

It is a super-2 number, since 2×5550555000581² (a number of 26 digits) contains 22 as substring.

Together with 5550555000583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5550555000583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775277500290 + 2775277500291.

It is an arithmetic number, because the mean of its divisors is an integer number (2775277500291).

Almost surely, 2^{5550555000581} is an apocalyptic number.

It is an amenable number.

5550555000581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550555000581 is an equidigital number, since it uses as much as digits as its factorization.

5550555000581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 625000, while the sum is 44.

The spelling of 5550555000581 in words is "five trillion, five hundred fifty billion, five hundred fifty-five million, five hundred eighty-one", and thus it is an aban number.