55443304443 has 4 divisors (see below), whose sum is σ = 73924405928. Its totient is φ = 36962202960.

The previous prime is 55443304393. The next prime is 55443304447. The reversal of 55443304443 is 34440334455.

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

It is not a de Polignac number, because 55443304443 - 2⁶ = 55443304379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55443304447) 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, 9240550738 + ... + 9240550743.

It is an arithmetic number, because the mean of its divisors is an integer number (18481101482).

Almost surely, 2^55443304443 is an apocalyptic number.

55443304443 is a deficient number, since it is larger than the sum of its proper divisors (18481101485).

55443304443 is a wasteful number, since it uses less digits than its factorization.

55443304443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18481101484.

The product of its (nonzero) digits is 691200, while the sum is 39.

Adding to 55443304443 its reverse (34440334455), we get a palindrome (89883638898).

The spelling of 55443304443 in words is "fifty-five billion, four hundred forty-three million, three hundred four thousand, four hundred forty-three".