54638686 has 8 divisors (see below), whose sum is σ = 82383264. Its totient is φ = 27177600.

The previous prime is 54638671. The next prime is 54638687. The reversal of 54638686 is 68683645.

54638686 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 (54638687) 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, 70390 + ... + 71161.

It is an arithmetic number, because the mean of its divisors is an integer number (10297908).

Almost surely, 2^54638686 is an apocalyptic number.

54638686 is a deficient number, since it is larger than the sum of its proper divisors (27744578).

54638686 is a wasteful number, since it uses less digits than its factorization.

54638686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141746.

The product of its digits is 829440, while the sum is 46.

The square root of 54638686 is about 7391.7985632727. The cubic root of 54638686 is about 379.4606522055.

The spelling of 54638686 in words is "fifty-four million, six hundred thirty-eight thousand, six hundred eighty-six".