554228321 has 4 divisors (see below), whose sum is σ = 554556612. Its totient is φ = 553900032.

The previous prime is 554228317. The next prime is 554228327. The reversal of 554228321 is 123822455.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 530657296 + 23571025 = 23036^2 + 4855^2 .

It is a cyclic number.

It is not a de Polignac number, because 554228321 - 2² = 554228317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (554228327) 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 3 ways as a sum of consecutive naturals, for example, 161600 + ... + 164993.

It is an arithmetic number, because the mean of its divisors is an integer number (138639153).

Almost surely, 2^554228321 is an apocalyptic number.

It is an amenable number.

554228321 is a deficient number, since it is larger than the sum of its proper divisors (328291).

554228321 is a wasteful number, since it uses less digits than its factorization.

554228321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328290.

The product of its digits is 19200, while the sum is 32.

The square root of 554228321 is about 23542.0543071330. The cubic root of 554228321 is about 821.4155210500.

The spelling of 554228321 in words is "five hundred fifty-four million, two hundred twenty-eight thousand, three hundred twenty-one".