550138 has 8 divisors (see below), whose sum is σ = 845460. Its totient is φ = 268320.

The previous prime is 550129. The next prime is 550139. The reversal of 550138 is 831055.

550138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 528529 + 21609 = 727^2 + 147^2 .

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

It is not an unprimeable number, because it can be changed into a prime (550139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3273 + ... + 3436.

2⁵⁵⁰¹³⁸ is an apocalyptic number.

550138 is a deficient number, since it is larger than the sum of its proper divisors (295322).

550138 is a wasteful number, since it uses less digits than its factorization.

550138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6752.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 550138 is about 741.7128824552. The cubic root of 550138 is about 81.9389789922.

The spelling of 550138 in words is "five hundred fifty thousand, one hundred thirty-eight".