553463221 has 2 divisors, whose sum is σ = 553463222. Its totient is φ = 553463220.

The previous prime is 553463219. The next prime is 553463257. The reversal of 553463221 is 122364355.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 552908196 + 555025 = 23514^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 553463221 - 2¹ = 553463219 is a prime.

Together with 553463219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553463021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276731610 + 276731611.

It is an arithmetic number, because the mean of its divisors is an integer number (276731611).

Almost surely, 2^553463221 is an apocalyptic number.

It is an amenable number.

553463221 is a deficient number, since it is larger than the sum of its proper divisors (1).

553463221 is an equidigital number, since it uses as much as digits as its factorization.

553463221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 31.

The square root of 553463221 is about 23525.7990512543. The cubic root of 553463221 is about 821.0373649680.

The spelling of 553463221 in words is "five hundred fifty-three million, four hundred sixty-three thousand, two hundred twenty-one".