55118142 has 48 divisors (see below), whose sum is σ = 122653440. Its totient is φ = 17883216.

The previous prime is 55118137. The next prime is 55118149. The reversal of 55118142 is 24181155.

55118142 is a `hidden beast` number, since 5 + 511 + 8 + 142 = 666.

It is a super-3 number, since 3×55118142³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55118149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117793 + ... + 118259.

It is an arithmetic number, because the mean of its divisors is an integer number (2555280).

Almost surely, 2^55118142 is an apocalyptic number.

55118142 is an abundant number, since it is smaller than the sum of its proper divisors (67535298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55118142 is a wasteful number, since it uses less digits than its factorization.

55118142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 634 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 55118142 is about 7424.1593463503. The cubic root of 55118142 is about 380.5673473471.

Adding to 55118142 its reverse (24181155), we get a palindrome (79299297).

The spelling of 55118142 in words is "fifty-five million, one hundred eighteen thousand, one hundred forty-two".