54681393 has 8 divisors (see below), whose sum is σ = 78516928. Its totient is φ = 33650064.

The previous prime is 54681391. The next prime is 54681397. The reversal of 54681393 is 39318645.

54681393 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 54681393 - 2¹ = 54681391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1402087 = 54681393 / (5 + 4 + 6 + 8 + 1 + 3 + 9 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54681391) 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, 701005 + ... + 701082.

It is an arithmetic number, because the mean of its divisors is an integer number (9814616).

Almost surely, 2^54681393 is an apocalyptic number.

It is an amenable number.

54681393 is a deficient number, since it is larger than the sum of its proper divisors (23835535).

54681393 is a wasteful number, since it uses less digits than its factorization.

54681393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402103.

The product of its digits is 77760, while the sum is 39.

The square root of 54681393 is about 7394.6868087837. The cubic root of 54681393 is about 379.5594918546.

The spelling of 54681393 in words is "fifty-four million, six hundred eighty-one thousand, three hundred ninety-three".