554268721 has 2 divisors, whose sum is σ = 554268722. Its totient is φ = 554268720.

The previous prime is 554268691. The next prime is 554268733. The reversal of 554268721 is 127862455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452157696 + 102111025 = 21264^2 + 10105^2 .

It is a cyclic number.

It is not a de Polignac number, because 554268721 - 2¹⁵ = 554235953 is a prime.

It is not a weakly prime, because it can be changed into another prime (554268751) 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, 277134360 + 277134361.

It is an arithmetic number, because the mean of its divisors is an integer number (277134361).

Almost surely, 2^554268721 is an apocalyptic number.

It is an amenable number.

554268721 is a deficient number, since it is larger than the sum of its proper divisors (1).

554268721 is an equidigital number, since it uses as much as digits as its factorization.

554268721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 40.

The square root of 554268721 is about 23542.9123304658. The cubic root of 554268721 is about 821.4354793593.

The spelling of 554268721 in words is "five hundred fifty-four million, two hundred sixty-eight thousand, seven hundred twenty-one".