556642424 has 64 divisors (see below), whose sum is σ = 1194782400. Its totient is φ = 240850944.

The previous prime is 556642423. The next prime is 556642451. The reversal of 556642424 is 424246655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556642421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634274 + ... + 635150.

It is an arithmetic number, because the mean of its divisors is an integer number (18668475).

Almost surely, 2^556642424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556642424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597391200).

556642424 is an abundant number, since it is smaller than the sum of its proper divisors (638139976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556642424 is a wasteful number, since it uses less digits than its factorization.

556642424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1268 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

The square root of 556642424 is about 23593.2707355297. The cubic root of 556642424 is about 822.6064318438.

The spelling of 556642424 in words is "five hundred fifty-six million, six hundred forty-two thousand, four hundred twenty-four".