555550055551 has 2 divisors, whose sum is σ = 555550055552. Its totient is φ = 555550055550.

The previous prime is 555550055531. The next prime is 555550055597. The reversal of 555550055551 is 155550055555.

It is a happy number.

It is an a-pointer prime, because the next prime (555550055597) can be obtained adding 555550055551 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555550055551 - 2¹³ = 555550047359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555550055531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277775027775 + 277775027776.

It is an arithmetic number, because the mean of its divisors is an integer number (277775027776).

Almost surely, 2^555550055551 is an apocalyptic number.

555550055551 is a deficient number, since it is larger than the sum of its proper divisors (1).

555550055551 is an equidigital number, since it uses as much as digits as its factorization.

555550055551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1953125, while the sum is 46.

The spelling of 555550055551 in words is "five hundred fifty-five billion, five hundred fifty million, fifty-five thousand, five hundred fifty-one".