55112687 has 8 divisors (see below), whose sum is σ = 63037056. Its totient is φ = 47201112.

The previous prime is 55112677. The next prime is 55112693. The reversal of 55112687 is 78621155.

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

It is a de Polignac number, because none of the positive numbers 2^k-55112687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55112677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9308 + ... + 14030.

It is an arithmetic number, because the mean of its divisors is an integer number (7879632).

Almost surely, 2^55112687 is an apocalyptic number.

55112687 is a deficient number, since it is larger than the sum of its proper divisors (7924369).

55112687 is a wasteful number, since it uses less digits than its factorization.

55112687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6397.

The product of its digits is 16800, while the sum is 35.

The square root of 55112687 is about 7423.7919555979. The cubic root of 55112687 is about 380.5547921139.

The spelling of 55112687 in words is "fifty-five million, one hundred twelve thousand, six hundred eighty-seven".