558138 has 32 divisors (see below), whose sum is σ = 1298304. Its totient is φ = 156672.

The previous prime is 558121. The next prime is 558139. The reversal of 558138 is 831855.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (558139) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4006 + ... + 4142.

It is an arithmetic number, because the mean of its divisors is an integer number (40572).

2⁵⁵⁸¹³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 558138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (649152).

558138 is an abundant number, since it is smaller than the sum of its proper divisors (740166).

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

558138 is a wasteful number, since it uses less digits than its factorization.

558138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246.

The product of its digits is 4800, while the sum is 30.

The square root of 558138 is about 747.0863403918. The cubic root of 558138 is about 82.3342493993.

It can be divided in two parts, 558 and 138, that added together give a palindrome (696).

The spelling of 558138 in words is "five hundred fifty-eight thousand, one hundred thirty-eight".