55055050019 has 4 divisors (see below), whose sum is σ = 55988186520. Its totient is φ = 54121913520.

The previous prime is 55055050013. The next prime is 55055050049. The reversal of 55055050019 is 91005055055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91005055055 = 5 ⋅18201011011.

It is a cyclic number.

It is not a de Polignac number, because 55055050019 - 2⁴ = 55055050003 is a prime.

It is a super-2 number, since 2×55055050019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55055050013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466568162 + ... + 466568279.

It is an arithmetic number, because the mean of its divisors is an integer number (13997046630).

Almost surely, 2^55055050019 is an apocalyptic number.

55055050019 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

55055050019 is a deficient number, since it is larger than the sum of its proper divisors (933136501).

55055050019 is an equidigital number, since it uses as much as digits as its factorization.

55055050019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933136500.

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

The spelling of 55055050019 in words is "fifty-five billion, fifty-five million, fifty thousand, nineteen".