55549906823 has 2 divisors, whose sum is σ = 55549906824. Its totient is φ = 55549906822.

The previous prime is 55549906801. The next prime is 55549906831. The reversal of 55549906823 is 32860994555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55549906823 - 2²⁸ = 55281471367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55549900823) 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, 27774953411 + 27774953412.

It is an arithmetic number, because the mean of its divisors is an integer number (27774953412).

Almost surely, 2^55549906823 is an apocalyptic number.

55549906823 is a deficient number, since it is larger than the sum of its proper divisors (1).

55549906823 is an equidigital number, since it uses as much as digits as its factorization.

55549906823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664000, while the sum is 56.

The spelling of 55549906823 in words is "fifty-five billion, five hundred forty-nine million, nine hundred six thousand, eight hundred twenty-three".