55118830 has 16 divisors (see below), whose sum is σ = 106845984. Its totient is φ = 20351520.

The previous prime is 55118813. The next prime is 55118839. The reversal of 55118830 is 3881155.

It is a junction number, because it is equal to n+sod(n) for n = 55118792 and 55118801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55118839) 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, 211866 + ... + 212125.

It is an arithmetic number, because the mean of its divisors is an integer number (6677874).

Almost surely, 2^55118830 is an apocalyptic number.

55118830 is a deficient number, since it is larger than the sum of its proper divisors (51727154).

55118830 is a wasteful number, since it uses less digits than its factorization.

55118830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424011.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 55118830 is about 7424.2056814180. The cubic root of 55118830 is about 380.5689307897.

Adding to 55118830 its reverse (3881155), we get a palindrome (58999985).

It can be divided in two parts, 5511 and 8830, that added together give a palindrome (14341).

The spelling of 55118830 in words is "fifty-five million, one hundred eighteen thousand, eight hundred thirty".