55542503123 has 4 divisors (see below), whose sum is σ = 55763788248. Its totient is φ = 55321218000.

The previous prime is 55542503089. The next prime is 55542503131. The reversal of 55542503123 is 32130524555.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55542503123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55542553123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110642186 + ... + 110642687.

It is an arithmetic number, because the mean of its divisors is an integer number (13940947062).

Almost surely, 2^55542503123 is an apocalyptic number.

55542503123 is a deficient number, since it is larger than the sum of its proper divisors (221285125).

55542503123 is a wasteful number, since it uses less digits than its factorization.

55542503123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221285124.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 55542503123 in words is "fifty-five billion, five hundred forty-two million, five hundred three thousand, one hundred twenty-three".