101558 has 16 divisors (see below), whose sum is σ = 168480. Its totient is φ = 45696.

The previous prime is 101537. The next prime is 101561. The reversal of 101558 is 855101.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

101558 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935 + ... + 1037.

It is an arithmetic number, because the mean of its divisors is an integer number (10530).

2¹⁰¹⁵⁵⁸ is an apocalyptic number.

101558 is a deficient number, since it is larger than the sum of its proper divisors (66922).

101558 is a wasteful number, since it uses less digits than its factorization.

101558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 101558 is about 318.6816593405. The cubic root of 101558 is about 46.6557003711.

Adding to 101558 its reverse (855101), we get a palindrome (956659).

The spelling of 101558 in words is "one hundred one thousand, five hundred fifty-eight".