555138 has 12 divisors (see below), whose sum is σ = 1202838. Its totient is φ = 185040.

The previous prime is 555119. The next prime is 555143. The reversal of 555138 is 831555.

It can be written as a sum of positive squares in only one way, i.e., 400689 + 154449 = 633^2 + 393^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 555138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15403 + ... + 15438.

2⁵⁵⁵¹³⁸ is an apocalyptic number.

555138 is an abundant number, since it is smaller than the sum of its proper divisors (647700).

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

555138 is a wasteful number, since it uses less digits than its factorization.

555138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30849 (or 30846 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 555138 is about 745.0758350665. The cubic root of 555138 is about 82.1864683712.

The spelling of 555138 in words is "five hundred fifty-five thousand, one hundred thirty-eight".