55505005019 has 2 divisors, whose sum is σ = 55505005020. Its totient is φ = 55505005018.

The previous prime is 55505005009. The next prime is 55505005067. The reversal of 55505005019 is 91050050555.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55505005019 is a prime.

It is a super-2 number, since 2×55505005019² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55505005019.

It is not a weakly prime, because it can be changed into another prime (55505005009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752502509 + 27752502510.

It is an arithmetic number, because the mean of its divisors is an integer number (27752502510).

Almost surely, 2^55505005019 is an apocalyptic number.

55505005019 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505005019 is an equidigital number, since it uses as much as digits as its factorization.

55505005019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28125, while the sum is 35.

The spelling of 55505005019 in words is "fifty-five billion, five hundred five million, five thousand, nineteen".