101543 has 8 divisors (see below), whose sum is σ = 111888. Its totient is φ = 91584.

The previous prime is 101537. The next prime is 101561. The reversal of 101543 is 345101.

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

It is a cyclic number.

It is not a de Polignac number, because 101543 - 2⁴ = 101527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896 + ... + 1002.

It is an arithmetic number, because the mean of its divisors is an integer number (13986).

2¹⁰¹⁵⁴³ is an apocalyptic number.

101543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

101543 is a deficient number, since it is larger than the sum of its proper divisors (10345).

101543 is a wasteful number, since it uses less digits than its factorization.

101543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 101543 is about 318.6581240138. The cubic root of 101543 is about 46.6534032602.

Adding to 101543 its reverse (345101), we get a palindrome (446644).

The spelling of 101543 in words is "one hundred one thousand, five hundred forty-three".