552240321 has 4 divisors (see below), whose sum is σ = 736320432. Its totient is φ = 368160212.

The previous prime is 552240317. The next prime is 552240329. The reversal of 552240321 is 123042255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 552240321 - 2² = 552240317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 552240291 and 552240300.

It is not an unprimeable number, because it can be changed into a prime (552240329) 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, 92040051 + ... + 92040056.

It is an arithmetic number, because the mean of its divisors is an integer number (184080108).

Almost surely, 2^552240321 is an apocalyptic number.

It is an amenable number.

552240321 is a deficient number, since it is larger than the sum of its proper divisors (184080111).

552240321 is a wasteful number, since it uses less digits than its factorization.

552240321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184080110.

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

The square root of 552240321 is about 23499.7940629274. The cubic root of 552240321 is about 820.4322136476.

Adding to 552240321 its reverse (123042255), we get a palindrome (675282576).

The spelling of 552240321 in words is "five hundred fifty-two million, two hundred forty thousand, three hundred twenty-one".