55002778055 has 4 divisors (see below), whose sum is σ = 66003333672. Its totient is φ = 44002222440.

The previous prime is 55002778037. The next prime is 55002778057. The reversal of 55002778055 is 55087720055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55087720055 = 5 ⋅11017544011.

It is not a de Polignac number, because 55002778055 - 2⁸ = 55002777799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55002777997 and 55002778015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55002778057) 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, 5500277801 + ... + 5500277810.

It is an arithmetic number, because the mean of its divisors is an integer number (16500833418).

Almost surely, 2^55002778055 is an apocalyptic number.

55002778055 is a deficient number, since it is larger than the sum of its proper divisors (11000555617).

55002778055 is a wasteful number, since it uses less digits than its factorization.

55002778055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000555616.

The product of its (nonzero) digits is 490000, while the sum is 44.

The spelling of 55002778055 in words is "fifty-five billion, two million, seven hundred seventy-eight thousand, fifty-five".