55055004997 has 2 divisors, whose sum is σ = 55055004998. Its totient is φ = 55055004996.

The previous prime is 55055004989. The next prime is 55055005037. The reversal of 55055004997 is 79940055055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52562898756 + 2492106241 = 229266^2 + 49921^2 .

It is a cyclic number.

It is not a de Polignac number, because 55055004997 - 2³ = 55055004989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55055004997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55055004937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527502498 + 27527502499.

It is an arithmetic number, because the mean of its divisors is an integer number (27527502499).

Almost surely, 2^55055004997 is an apocalyptic number.

It is an amenable number.

55055004997 is a deficient number, since it is larger than the sum of its proper divisors (1).

55055004997 is an equidigital number, since it uses as much as digits as its factorization.

55055004997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1417500, while the sum is 49.

The spelling of 55055004997 in words is "fifty-five billion, fifty-five million, four thousand, nine hundred ninety-seven".