55278113 has 8 divisors (see below), whose sum is σ = 60503520. Its totient is φ = 50086080.

The previous prime is 55278109. The next prime is 55278121. The reversal of 55278113 is 31187255.

55278113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55278113 - 2² = 55278109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55278113.

It is not an unprimeable number, because it can be changed into a prime (55278133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4808 + ... + 11561.

It is an arithmetic number, because the mean of its divisors is an integer number (7562940).

Almost surely, 2^55278113 is an apocalyptic number.

It is an amenable number.

55278113 is a deficient number, since it is larger than the sum of its proper divisors (5225407).

55278113 is a wasteful number, since it uses less digits than its factorization.

55278113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16687.

The product of its digits is 8400, while the sum is 32.

The square root of 55278113 is about 7434.9252181848. The cubic root of 55278113 is about 380.9351689875.

The spelling of 55278113 in words is "fifty-five million, two hundred seventy-eight thousand, one hundred thirteen".