554009321 has 2 divisors, whose sum is σ = 554009322. Its totient is φ = 554009320.

The previous prime is 554009317. The next prime is 554009327. The reversal of 554009321 is 123900455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 553425625 + 583696 = 23525^2 + 764^2 .

It is a cyclic number.

It is not a de Polignac number, because 554009321 - 2² = 554009317 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (554009327) 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 as a sum of consecutive naturals, namely, 277004660 + 277004661.

It is an arithmetic number, because the mean of its divisors is an integer number (277004661).

Almost surely, 2^554009321 is an apocalyptic number.

It is an amenable number.

554009321 is a deficient number, since it is larger than the sum of its proper divisors (1).

554009321 is an equidigital number, since it uses as much as digits as its factorization.

554009321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 554009321 is about 23537.4025967183. The cubic root of 554009321 is about 821.3073143227.

Adding to 554009321 its reverse (123900455), we get a palindrome (677909776).

The spelling of 554009321 in words is "five hundred fifty-four million, nine thousand, three hundred twenty-one".