55219459205 has 4 divisors (see below), whose sum is σ = 66263351052. Its totient is φ = 44175567360.

The previous prime is 55219459193. The next prime is 55219459259. The reversal of 55219459205 is 50295491255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50295491255 = 5 ⋅10059098251.

It can be written as a sum of positive squares in 2 ways, for example, as 34483747204 + 20735712001 = 185698^2 + 143999^2 .

It is not a de Polignac number, because 55219459205 - 2⁴ = 55219459189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55219459205.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5521945916 + ... + 5521945925.

It is an arithmetic number, because the mean of its divisors is an integer number (16565837763).

Almost surely, 2^55219459205 is an apocalyptic number.

It is an amenable number.

55219459205 is a deficient number, since it is larger than the sum of its proper divisors (11043891847).

55219459205 is a wasteful number, since it uses less digits than its factorization.

55219459205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11043891846.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 55219459205 in words is "fifty-five billion, two hundred nineteen million, four hundred fifty-nine thousand, two hundred five".