552243021 has 32 divisors (see below), whose sum is σ = 834969600. Its totient is φ = 321633600.

The previous prime is 552243017. The next prime is 552243047. The reversal of 552243021 is 120342255.

552243021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 552243021 - 2² = 552243017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 552242982 and 552243000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552243001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150616 + ... + 154238.

It is an arithmetic number, because the mean of its divisors is an integer number (26092800).

Almost surely, 2^552243021 is an apocalyptic number.

It is an amenable number.

552243021 is a deficient number, since it is larger than the sum of its proper divisors (282726579).

552243021 is a wasteful number, since it uses less digits than its factorization.

552243021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 552243021 is about 23499.8515101692. The cubic root of 552243021 is about 820.4335507246.

Adding to 552243021 its reverse (120342255), we get a palindrome (672585276).

The spelling of 552243021 in words is "five hundred fifty-two million, two hundred forty-three thousand, twenty-one".