552320631 has 24 divisors (see below), whose sum is σ = 826718880. Its totient is φ = 354908736.

The previous prime is 552320623. The next prime is 552320647. The reversal of 552320631 is 136023255.

552320631 is a `hidden beast` number, since 5 + 5 + 2 + 3 + 20 + 631 = 666.

It is not a de Polignac number, because 552320631 - 2³ = 552320623 is a prime.

It is a super-2 number, since 2×552320631² = 610116158856476322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 552320595 and 552320604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552320611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189870 + ... + 192756.

It is an arithmetic number, because the mean of its divisors is an integer number (34446620).

Almost surely, 2^552320631 is an apocalyptic number.

552320631 is a deficient number, since it is larger than the sum of its proper divisors (274398249).

552320631 is a wasteful number, since it uses less digits than its factorization.

552320631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655 (or 3652 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 552320631 is about 23501.5027391867. The cubic root of 552320631 is about 820.4719823950.

Adding to 552320631 its reverse (136023255), we get a palindrome (688343886).

The spelling of 552320631 in words is "five hundred fifty-two million, three hundred twenty thousand, six hundred thirty-one".