55812638 has 8 divisors (see below), whose sum is σ = 95678832. Its totient is φ = 23919696.

The previous prime is 55812619. The next prime is 55812703. The reversal of 55812638 is 83621855.

55812638 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 an unprimeable number.

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, 1993295 + ... + 1993322.

It is an arithmetic number, because the mean of its divisors is an integer number (11959854).

Almost surely, 2^55812638 is an apocalyptic number.

55812638 is a deficient number, since it is larger than the sum of its proper divisors (39866194).

55812638 is a wasteful number, since it uses less digits than its factorization.

55812638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986626.

The product of its digits is 57600, while the sum is 38.

The square root of 55812638 is about 7470.7856347241. The cubic root of 55812638 is about 382.1590805136.

The spelling of 55812638 in words is "fifty-five million, eight hundred twelve thousand, six hundred thirty-eight".