555638 has 8 divisors (see below), whose sum is σ = 836832. Its totient is φ = 276696.

The previous prime is 555637. The next prime is 555661. The reversal of 555638 is 836555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555637) by changing a digit.

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, 356 + ... + 1112.

It is an arithmetic number, because the mean of its divisors is an integer number (104604).

2⁵⁵⁵⁶³⁸ is an apocalyptic number.

555638 is a deficient number, since it is larger than the sum of its proper divisors (281194).

555638 is a wasteful number, since it uses less digits than its factorization.

555638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its digits is 18000, while the sum is 32.

The square root of 555638 is about 745.4112958629. The cubic root of 555638 is about 82.2111354529.

The spelling of 555638 in words is "five hundred fifty-five thousand, six hundred thirty-eight".