55118511 has 24 divisors (see below), whose sum is σ = 94947840. Its totient is φ = 30126096.

The previous prime is 55118491. The next prime is 55118519. The reversal of 55118511 is 11581155.

55118511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55118511 - 2⁹ = 55117999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55118519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17571 + ... + 20468.

It is an arithmetic number, because the mean of its divisors is an integer number (3956160).

Almost surely, 2^55118511 is an apocalyptic number.

55118511 is a deficient number, since it is larger than the sum of its proper divisors (39829329).

55118511 is a wasteful number, since it uses less digits than its factorization.

55118511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38075 (or 38072 counting only the distinct ones).

The product of its digits is 1000, while the sum is 27.

The square root of 55118511 is about 7424.1841976072. The cubic root of 55118511 is about 380.5681966079.

Adding to 55118511 its reverse (11581155), we get a palindrome (66699666).

The spelling of 55118511 in words is "fifty-five million, one hundred eighteen thousand, five hundred eleven".