54400321 has 2 divisors, whose sum is σ = 54400322. Its totient is φ = 54400320.

The previous prime is 54400309. The next prime is 54400327. The reversal of 54400321 is 12300445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29550096 + 24850225 = 5436^2 + 4985^2 .

It is a cyclic number.

It is not a de Polignac number, because 54400321 - 2⁷ = 54400193 is a prime.

It is not a weakly prime, because it can be changed into another prime (54400327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27200160 + 27200161.

It is an arithmetic number, because the mean of its divisors is an integer number (27200161).

Almost surely, 2^54400321 is an apocalyptic number.

It is an amenable number.

54400321 is a deficient number, since it is larger than the sum of its proper divisors (1).

54400321 is an equidigital number, since it uses as much as digits as its factorization.

54400321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 54400321 is about 7375.6573266388. The cubic root of 54400321 is about 378.9080401501.

Adding to 54400321 its reverse (12300445), we get a palindrome (66700766).

The spelling of 54400321 in words is "fifty-four million, four hundred thousand, three hundred twenty-one".