55055003203 has 4 divisors (see below), whose sum is σ = 55079951040.
Its totient is φ = 55030055368.
The previous prime is 55055003189. The next prime is 55055003243. The reversal of 55055003203 is 30230055055.
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 2k-55055003203 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (55055003243) 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, 12470608 + ... + 12475021.
It is an arithmetic number, because the mean of its divisors is an integer number (13769987760).
Almost surely, 255055003203 is an apocalyptic number.
55055003203 is a deficient number, since it is larger than the sum of its proper divisors (24947837).
55055003203 is a wasteful number, since it uses less digits than its factorization.
55055003203 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 24947836.
The product of its (nonzero) digits is 11250, while the sum is 28.
Adding to 55055003203 its reverse (30230055055), we get a palindrome (85285058258).
The spelling of 55055003203 in words is "fifty-five billion, fifty-five million, three thousand, two hundred three".