55189232149 has 2 divisors, whose sum is σ = 55189232150. Its totient is φ = 55189232148.

The previous prime is 55189232129. The next prime is 55189232173. The reversal of 55189232149 is 94123298155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44457722500 + 10731509649 = 210850^2 + 103593^2 .

It is a cyclic number.

It is not a de Polignac number, because 55189232149 - 2⁵ = 55189232117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55189232129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27594616074 + 27594616075.

It is an arithmetic number, because the mean of its divisors is an integer number (27594616075).

Almost surely, 2^55189232149 is an apocalyptic number.

It is an amenable number.

55189232149 is a deficient number, since it is larger than the sum of its proper divisors (1).

55189232149 is an equidigital number, since it uses as much as digits as its factorization.

55189232149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 49.

The spelling of 55189232149 in words is "fifty-five billion, one hundred eighty-nine million, two hundred thirty-two thousand, one hundred forty-nine".