55004812789 has 2 divisors, whose sum is σ = 55004812790. Its totient is φ = 55004812788.

The previous prime is 55004812771. The next prime is 55004812843. The reversal of 55004812789 is 98721840055.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50067642564 + 4937170225 = 223758^2 + 70265^2 .

It is a cyclic number.

It is not a de Polignac number, because 55004812789 - 2¹⁹ = 55004288501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55004810789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502406394 + 27502406395.

It is an arithmetic number, because the mean of its divisors is an integer number (27502406395).

Almost surely, 2^55004812789 is an apocalyptic number.

It is an amenable number.

55004812789 is a deficient number, since it is larger than the sum of its proper divisors (1).

55004812789 is an equidigital number, since it uses as much as digits as its factorization.

55004812789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 55004812789 in words is "fifty-five billion, four million, eight hundred twelve thousand, seven hundred eighty-nine".