55840678 has 8 divisors (see below), whose sum is σ = 84590640. Its totient is φ = 27643800.

The previous prime is 55840667. The next prime is 55840679. The reversal of 55840678 is 87604855.

55840678 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55840679) 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 3 ways as a sum of consecutive naturals, for example, 138018 + ... + 138421.

It is an arithmetic number, because the mean of its divisors is an integer number (10573830).

Almost surely, 2^55840678 is an apocalyptic number.

55840678 is a deficient number, since it is larger than the sum of its proper divisors (28749962).

55840678 is a wasteful number, since it uses less digits than its factorization.

55840678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276542.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 55840678 is about 7472.6620424050. The cubic root of 55840678 is about 382.2230680917.

The spelling of 55840678 in words is "fifty-five million, eight hundred forty thousand, six hundred seventy-eight".