158538 has 8 divisors (see below), whose sum is σ = 317088. Its totient is φ = 52844.

The previous prime is 158537. The next prime is 158551. The reversal of 158538 is 835851.

It is a happy number.

158538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

158538 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158537) 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, 13206 + ... + 13217.

It is an arithmetic number, because the mean of its divisors is an integer number (39636).

2¹⁵⁸⁵³⁸ is an apocalyptic number.

158538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

158538 is a wasteful number, since it uses less digits than its factorization.

158538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26428.

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

The square root of 158538 is about 398.1683061219. The cubic root of 158538 is about 54.1224928479.

It can be divided in two parts, 158 and 538, that added together give a palindrome (696).

The spelling of 158538 in words is "one hundred fifty-eight thousand, five hundred thirty-eight".