556481540 has 12 divisors (see below), whose sum is σ = 1168611276. Its totient is φ = 222592608.

The previous prime is 556481537. The next prime is 556481579. The reversal of 556481540 is 45184655.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 381342784 + 175138756 = 19528^2 + 13234^2 .

It is a junction number, because it is equal to n+sod(n) for n = 556481494 and 556481503.

It is an unprimeable number.

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, 13912019 + ... + 13912058.

It is an arithmetic number, because the mean of its divisors is an integer number (97384273).

Almost surely, 2^556481540 is an apocalyptic number.

It is an amenable number.

556481540 is an abundant number, since it is smaller than the sum of its proper divisors (612129736).

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

556481540 is a wasteful number, since it uses less digits than its factorization.

556481540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27824086 (or 27824084 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 556481540 is about 23589.8609576233. The cubic root of 556481540 is about 822.5271727241.

The spelling of 556481540 in words is "five hundred fifty-six million, four hundred eighty-one thousand, five hundred forty".