55447701091 has 2 divisors, whose sum is σ = 55447701092. Its totient is φ = 55447701090.

The previous prime is 55447701059. The next prime is 55447701157. The reversal of 55447701091 is 19010774455.

It is a happy number.

55447701091 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 is a cyclic number.

It is not a de Polignac number, because 55447701091 - 2⁵ = 55447701059 is a prime.

It is not a weakly prime, because it can be changed into another prime (55447711091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27723850545 + 27723850546.

It is an arithmetic number, because the mean of its divisors is an integer number (27723850546).

Almost surely, 2^55447701091 is an apocalyptic number.

55447701091 is a deficient number, since it is larger than the sum of its proper divisors (1).

55447701091 is an equidigital number, since it uses as much as digits as its factorization.

55447701091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 55447701091 in words is "fifty-five billion, four hundred forty-seven million, seven hundred one thousand, ninety-one".