55490392129 has 2 divisors, whose sum is σ = 55490392130. Its totient is φ = 55490392128.

The previous prime is 55490392109. The next prime is 55490392151. The reversal of 55490392129 is 92129309455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32705999104 + 22784393025 = 180848^2 + 150945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55490392129 is a prime.

It is not a weakly prime, because it can be changed into another prime (55490392109) 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, 27745196064 + 27745196065.

It is an arithmetic number, because the mean of its divisors is an integer number (27745196065).

Almost surely, 2^55490392129 is an apocalyptic number.

It is an amenable number.

55490392129 is a deficient number, since it is larger than the sum of its proper divisors (1).

55490392129 is an equidigital number, since it uses as much as digits as its factorization.

55490392129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 874800, while the sum is 49.

The spelling of 55490392129 in words is "fifty-five billion, four hundred ninety million, three hundred ninety-two thousand, one hundred twenty-nine".