55118745 has 32 divisors (see below), whose sum is σ = 106899840. Its totient is φ = 26723520.

The previous prime is 55118737. The next prime is 55118747. The reversal of 55118745 is 54781155.

It is not a de Polignac number, because 55118745 - 2³ = 55118737 is a prime.

It is a super-3 number, since 3×55118745³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55118747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17074 + ... + 20043.

It is an arithmetic number, because the mean of its divisors is an integer number (3340620).

Almost surely, 2^55118745 is an apocalyptic number.

55118745 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55118745 is a deficient number, since it is larger than the sum of its proper divisors (51781095).

55118745 is a wasteful number, since it uses less digits than its factorization.

55118745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37142 (or 37136 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 55118745 is about 7424.1999568977. The cubic root of 55118745 is about 380.5687351616.

The spelling of 55118745 in words is "fifty-five million, one hundred eighteen thousand, seven hundred forty-five".