55424004423 has 4 divisors (see below), whose sum is σ = 73898672568. Its totient is φ = 36949336280.

The previous prime is 55424004409. The next prime is 55424004481. The reversal of 55424004423 is 32440042455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55424004423 - 2⁹ = 55424003911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55424004403) 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 in 3 ways as a sum of consecutive naturals, for example, 9237334068 + ... + 9237334073.

It is an arithmetic number, because the mean of its divisors is an integer number (18474668142).

Almost surely, 2^55424004423 is an apocalyptic number.

55424004423 is a deficient number, since it is larger than the sum of its proper divisors (18474668145).

55424004423 is a wasteful number, since it uses less digits than its factorization.

55424004423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18474668144.

The product of its (nonzero) digits is 76800, while the sum is 33.

Adding to 55424004423 its reverse (32440042455), we get a palindrome (87864046878).

The spelling of 55424004423 in words is "fifty-five billion, four hundred twenty-four million, four thousand, four hundred twenty-three".