55543203354442 has 4 divisors (see below), whose sum is σ = 83314805031666. Its totient is φ = 27771601677220.

The previous prime is 55543203354437. The next prime is 55543203354491. The reversal of 55543203354442 is 24445330234555.

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

It can be written as a sum of positive squares in only one way, i.e., 48584259598081 + 6958943756361 = 6970241^2 + 2637981^2 .

It is a super-2 number, since 2×55543203354442² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13885800838609 + ... + 13885800838612.

Almost surely, 2^{55543203354442} is an apocalyptic number.

55543203354442 is a deficient number, since it is larger than the sum of its proper divisors (27771601677224).

55543203354442 is a wasteful number, since it uses less digits than its factorization.

55543203354442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27771601677223.

The product of its (nonzero) digits is 17280000, while the sum is 49.

Adding to 55543203354442 its reverse (24445330234555), we get a palindrome (79988533588997).

The spelling of 55543203354442 in words is "fifty-five trillion, five hundred forty-three billion, two hundred three million, three hundred fifty-four thousand, four hundred forty-two".