55120043 has 8 divisors (see below), whose sum is σ = 60727536. Its totient is φ = 49612000.

The previous prime is 55120003. The next prime is 55120061. The reversal of 55120043 is 34002155.

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 55120043 - 2⁶ = 55119979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55119997 and 55120024.

It is not an unprimeable number, because it can be changed into a prime (55120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23696 + ... + 25917.

It is an arithmetic number, because the mean of its divisors is an integer number (7590942).

Almost surely, 2^55120043 is an apocalyptic number.

55120043 is a deficient number, since it is larger than the sum of its proper divisors (5607493).

55120043 is a wasteful number, since it uses less digits than its factorization.

55120043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49725.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 55120043 is about 7424.2873732096. The cubic root of 55120043 is about 380.5717224958.

Adding to 55120043 its reverse (34002155), we get a palindrome (89122198).

The spelling of 55120043 in words is "fifty-five million, one hundred twenty thousand, forty-three".