55500005489 has 2 divisors, whose sum is σ = 55500005490. Its totient is φ = 55500005488.

The previous prime is 55500005471. The next prime is 55500005543. The reversal of 55500005489 is 98450000555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54382240000 + 1117765489 = 233200^2 + 33433^2 .

It is a cyclic number.

It is not a de Polignac number, because 55500005489 - 2¹² = 55500001393 is a prime.

It is not a weakly prime, because it can be changed into another prime (55500005419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27750002744 + 27750002745.

It is an arithmetic number, because the mean of its divisors is an integer number (27750002745).

Almost surely, 2^55500005489 is an apocalyptic number.

It is an amenable number.

55500005489 is a deficient number, since it is larger than the sum of its proper divisors (1).

55500005489 is an equidigital number, since it uses as much as digits as its factorization.

55500005489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 55500005489 in words is "fifty-five billion, five hundred million, five thousand, four hundred eighty-nine".