54817321 has 8 divisors (see below), whose sum is σ = 59608640. Its totient is φ = 50108112.

The previous prime is 54817309. The next prime is 54817327. The reversal of 54817321 is 12371845.

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

It is a cyclic number.

It is not a de Polignac number, because 54817321 - 2⁷ = 54817193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54817327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19131 + ... + 21808.

It is an arithmetic number, because the mean of its divisors is an integer number (7451080).

Almost surely, 2^54817321 is an apocalyptic number.

It is an amenable number.

54817321 is a deficient number, since it is larger than the sum of its proper divisors (4791319).

54817321 is a wasteful number, since it uses less digits than its factorization.

54817321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41055.

The product of its digits is 6720, while the sum is 31.

The square root of 54817321 is about 7403.8720275272. The cubic root of 54817321 is about 379.8737369061.

The spelling of 54817321 in words is "fifty-four million, eight hundred seventeen thousand, three hundred twenty-one".