55508480809 has 2 divisors, whose sum is σ = 55508480810. Its totient is φ = 55508480808.

The previous prime is 55508480789. The next prime is 55508480861. The reversal of 55508480809 is 90808480555.

It is an a-pointer prime, because the next prime (55508480861) can be obtained adding 55508480809 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45215769600 + 10292711209 = 212640^2 + 101453^2 .

It is a cyclic number.

It is not a de Polignac number, because 55508480809 - 2⁵ = 55508480777 is a prime.

It is not a weakly prime, because it can be changed into another prime (55508480879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27754240404 + 27754240405.

It is an arithmetic number, because the mean of its divisors is an integer number (27754240405).

Almost surely, 2^55508480809 is an apocalyptic number.

It is an amenable number.

55508480809 is a deficient number, since it is larger than the sum of its proper divisors (1).

55508480809 is an equidigital number, since it uses as much as digits as its factorization.

55508480809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304000, while the sum is 52.

The spelling of 55508480809 in words is "fifty-five billion, five hundred eight million, four hundred eighty thousand, eight hundred nine".