556006655 has 4 divisors (see below), whose sum is σ = 667207992. Its totient is φ = 444805320.

The previous prime is 556006639. The next prime is 556006657. The reversal of 556006655 is 556600655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 556006655 - 2⁴ = 556006639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556006657) 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 3 ways as a sum of consecutive naturals, for example, 55600661 + ... + 55600670.

It is an arithmetic number, because the mean of its divisors is an integer number (166801998).

Almost surely, 2^556006655 is an apocalyptic number.

556006655 is a deficient number, since it is larger than the sum of its proper divisors (111201337).

556006655 is a wasteful number, since it uses less digits than its factorization.

556006655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111201336.

The product of its (nonzero) digits is 135000, while the sum is 38.

The square root of 556006655 is about 23579.7933621141. The cubic root of 556006655 is about 822.2931326278.

Adding to 556006655 its product of nonzero digits (135000), we get a palindrome (556141655).

The spelling of 556006655 in words is "five hundred fifty-six million, six thousand, six hundred fifty-five".