556456138 has 64 divisors (see below), whose sum is σ = 1050624000. Its totient is φ = 215550720.

The previous prime is 556456133. The next prime is 556456157. The reversal of 556456138 is 831654655.

It is a junction number, because it is equal to n+sod(n) for n = 556456094 and 556456103.

It is not an unprimeable number, because it can be changed into a prime (556456133) 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 31 ways as a sum of consecutive naturals, for example, 1468033 + ... + 1468411.

It is an arithmetic number, because the mean of its divisors is an integer number (16416000).

Almost surely, 2^556456138 is an apocalyptic number.

556456138 is a deficient number, since it is larger than the sum of its proper divisors (494167862).

556456138 is a wasteful number, since it uses less digits than its factorization.

556456138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635.

The product of its digits is 432000, while the sum is 43.

The square root of 556456138 is about 23589.3225422012. The cubic root of 556456138 is about 822.5146570929.

The spelling of 556456138 in words is "five hundred fifty-six million, four hundred fifty-six thousand, one hundred thirty-eight".