54311321 has 8 divisors (see below), whose sum is σ = 55224840. Its totient is φ = 53405568.

The previous prime is 54311317. The next prime is 54311333. The reversal of 54311321 is 12311345.

It can be written as a sum of positive squares in 4 ways, for example, as 2758921 + 51552400 = 1661^2 + 7180^2 .

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 54311321 - 2² = 54311317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54311293 and 54311302.

It is not an unprimeable number, because it can be changed into a prime (54311351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13115 + ... + 16751.

It is an arithmetic number, because the mean of its divisors is an integer number (6903105).

Almost surely, 2^54311321 is an apocalyptic number.

It is an amenable number.

54311321 is a deficient number, since it is larger than the sum of its proper divisors (913519).

54311321 is a wasteful number, since it uses less digits than its factorization.

54311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883.

The product of its digits is 360, while the sum is 20.

The square root of 54311321 is about 7369.6214963864. The cubic root of 54311321 is about 378.7012936819.

Adding to 54311321 its reverse (12311345), we get a palindrome (66622666).

The spelling of 54311321 in words is "fifty-four million, three hundred eleven thousand, three hundred twenty-one".