55444694429 has 2 divisors, whose sum is σ = 55444694430. Its totient is φ = 55444694428.

The previous prime is 55444694381. The next prime is 55444694441. The reversal of 55444694429 is 92449644455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55436702500 + 7991929 = 235450^2 + 2827^2 .

It is a cyclic number.

It is not a de Polignac number, because 55444694429 - 2¹² = 55444690333 is a prime.

It is a super-2 number, since 2×55444694429² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55444694449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27722347214 + 27722347215.

It is an arithmetic number, because the mean of its divisors is an integer number (27722347215).

Almost surely, 2^55444694429 is an apocalyptic number.

It is an amenable number.

55444694429 is a deficient number, since it is larger than the sum of its proper divisors (1).

55444694429 is an equidigital number, since it uses as much as digits as its factorization.

55444694429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24883200, while the sum is 56.

The spelling of 55444694429 in words is "fifty-five billion, four hundred forty-four million, six hundred ninety-four thousand, four hundred twenty-nine".