113547 has 8 divisors (see below), whose sum is σ = 173056. Its totient is φ = 64872.

The previous prime is 113539. The next prime is 113557. The reversal of 113547 is 745311.

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

It is not a de Polignac number, because 113547 - 2³ = 113539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5407 = 113547 / (1 + 1 + 3 + 5 + 4 + 7).

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (113537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2683 + ... + 2724.

It is an arithmetic number, because the mean of its divisors is an integer number (21632).

2¹¹³⁵⁴⁷ is an apocalyptic number.

113547 is a deficient number, since it is larger than the sum of its proper divisors (59509).

113547 is an equidigital number, since it uses as much as digits as its factorization.

113547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5417.

The product of its digits is 420, while the sum is 21.

The square root of 113547 is about 336.9673574695. The cubic root of 113547 is about 48.4237651658.

Subtracting from 113547 its sum of digits (21), we obtain a triangular number (113526 = T₄₇₆).

Adding to 113547 its reverse (745311), we get a palindrome (858858).

The spelling of 113547 in words is "one hundred thirteen thousand, five hundred forty-seven".