55420350443 has 8 divisors (see below), whose sum is σ = 57922445280. Its totient is φ = 52957658880.

The previous prime is 55420350439. The next prime is 55420350467. The reversal of 55420350443 is 34405302455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55420350443 - 2² = 55420350439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55420350413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9847943 + ... + 9853568.

It is an arithmetic number, because the mean of its divisors is an integer number (7240305660).

Almost surely, 2^55420350443 is an apocalyptic number.

55420350443 is a deficient number, since it is larger than the sum of its proper divisors (2502094837).

55420350443 is a wasteful number, since it uses less digits than its factorization.

55420350443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19701637.

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 55420350443 its reverse (34405302455), we get a palindrome (89825652898).

The spelling of 55420350443 in words is "fifty-five billion, four hundred twenty million, three hundred fifty thousand, four hundred forty-three".