55545254551 has 2 divisors, whose sum is σ = 55545254552. Its totient is φ = 55545254550.

The previous prime is 55545254549. The next prime is 55545254561. The reversal of 55545254551 is 15545254555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55545254551 - 2¹ = 55545254549 is a prime.

Together with 55545254549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55545254561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27772627275 + 27772627276.

It is an arithmetic number, because the mean of its divisors is an integer number (27772627276).

Almost surely, 2^55545254551 is an apocalyptic number.

55545254551 is a deficient number, since it is larger than the sum of its proper divisors (1).

55545254551 is an equidigital number, since it uses as much as digits as its factorization.

55545254551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2500000, while the sum is 46.

The spelling of 55545254551 in words is "fifty-five billion, five hundred forty-five million, two hundred fifty-four thousand, five hundred fifty-one".