55718242 has 8 divisors (see below), whose sum is σ = 83633616. Its totient is φ = 27840372.

The previous prime is 55718207. The next prime is 55718249. The reversal of 55718242 is 24281755.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 55718198 and 55718207.

It is not an unprimeable number, because it can be changed into a prime (55718249) 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 3 ways as a sum of consecutive naturals, for example, 5308 + ... + 11815.

It is an arithmetic number, because the mean of its divisors is an integer number (10454202).

Almost surely, 2^55718242 is an apocalyptic number.

55718242 is a deficient number, since it is larger than the sum of its proper divisors (27915374).

55718242 is a wasteful number, since it uses less digits than its factorization.

55718242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18752.

The product of its digits is 22400, while the sum is 34.

The square root of 55718242 is about 7464.4652856049. The cubic root of 55718242 is about 381.9435101907.

Adding to 55718242 its reverse (24281755), we get a palindrome (79999997).

The spelling of 55718242 in words is "fifty-five million, seven hundred eighteen thousand, two hundred forty-two".