5550505559551 has 2 divisors, whose sum is σ = 5550505559552. Its totient is φ = 5550505559550.

The previous prime is 5550505559549. The next prime is 5550505559567. The reversal of 5550505559551 is 1559555050555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5550505559551 - 2¹ = 5550505559549 is a prime.

It is a super-2 number, since 2×5550505559551² (a number of 26 digits) contains 22 as substring.

Together with 5550505559549, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5550505559492 and 5550505559501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5550505559581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775252779775 + 2775252779776.

It is an arithmetic number, because the mean of its divisors is an integer number (2775252779776).

Almost surely, 2^{5550505559551} is an apocalyptic number.

5550505559551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550505559551 is an equidigital number, since it uses as much as digits as its factorization.

5550505559551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17578125, while the sum is 55.

The spelling of 5550505559551 in words is "five trillion, five hundred fifty billion, five hundred five million, five hundred fifty-nine thousand, five hundred fifty-one".