55020404123 has 4 divisors (see below), whose sum is σ = 55022845248. Its totient is φ = 55017963000.

The previous prime is 55020404111. The next prime is 55020404141. The reversal of 55020404123 is 32140402055.

It is a happy number.

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 55020404123 - 2⁶ = 55020404059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55020404092 and 55020404101.

It is not an unprimeable number, because it can be changed into a prime (55020404323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186436 + ... + 1231937.

It is an arithmetic number, because the mean of its divisors is an integer number (13755711312).

Almost surely, 2^55020404123 is an apocalyptic number.

55020404123 is a deficient number, since it is larger than the sum of its proper divisors (2441125).

55020404123 is a wasteful number, since it uses less digits than its factorization.

55020404123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441124.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 55020404123 its reverse (32140402055), we get a palindrome (87160806178).

The spelling of 55020404123 in words is "fifty-five billion, twenty million, four hundred four thousand, one hundred twenty-three".