55118289 has 8 divisors (see below), whose sum is σ = 73677760. Its totient is φ = 36652176.

The previous prime is 55118269. The next prime is 55118321. The reversal of 55118289 is 98281155.

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

It is not a de Polignac number, because 55118289 - 2⁵ = 55118257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55118209) 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, 21949 + ... + 24330.

It is an arithmetic number, because the mean of its divisors is an integer number (9209720).

Almost surely, 2^55118289 is an apocalyptic number.

It is an amenable number.

55118289 is a deficient number, since it is larger than the sum of its proper divisors (18559471).

55118289 is a wasteful number, since it uses less digits than its factorization.

55118289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46679.

The product of its digits is 28800, while the sum is 39.

The square root of 55118289 is about 7424.1692464544. The cubic root of 55118289 is about 380.5676856709.

The spelling of 55118289 in words is "fifty-five million, one hundred eighteen thousand, two hundred eighty-nine".