554630521 has 2 divisors, whose sum is σ = 554630522. Its totient is φ = 554630520.

The previous prime is 554630519. The next prime is 554630543. The reversal of 554630521 is 125036455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373996921 + 180633600 = 19339^2 + 13440^2 .

It is a cyclic number.

It is not a de Polignac number, because 554630521 - 2¹ = 554630519 is a prime.

Together with 554630519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (558630521) 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, 277315260 + 277315261.

It is an arithmetic number, because the mean of its divisors is an integer number (277315261).

Almost surely, 2^554630521 is an apocalyptic number.

It is an amenable number.

554630521 is a deficient number, since it is larger than the sum of its proper divisors (1).

554630521 is an equidigital number, since it uses as much as digits as its factorization.

554630521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 554630521 is about 23550.5949181756. The cubic root of 554630521 is about 821.6141716937.

Adding to 554630521 its reverse (125036455), we get a palindrome (679666976).

The spelling of 554630521 in words is "five hundred fifty-four million, six hundred thirty thousand, five hundred twenty-one".