55388974349 has 2 divisors, whose sum is σ = 55388974350. Its totient is φ = 55388974348.

The previous prime is 55388974339. The next prime is 55388974391. The reversal of 55388974349 is 94347988355.

55388974349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52989738025 + 2399236324 = 230195^2 + 48982^2 .

It is a cyclic number.

It is not a de Polignac number, because 55388974349 - 2⁸ = 55388974093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55388974339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27694487174 + 27694487175.

It is an arithmetic number, because the mean of its divisors is an integer number (27694487175).

Almost surely, 2^55388974349 is an apocalyptic number.

It is an amenable number.

55388974349 is a deficient number, since it is larger than the sum of its proper divisors (1).

55388974349 is an equidigital number, since it uses as much as digits as its factorization.

55388974349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 130636800, while the sum is 65.

The spelling of 55388974349 in words is "fifty-five billion, three hundred eighty-eight million, nine hundred seventy-four thousand, three hundred forty-nine".