113545 has 4 divisors (see below), whose sum is σ = 136260. Its totient is φ = 90832.

The previous prime is 113539. The next prime is 113557. The reversal of 113545 is 545311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545311 = 13 ⋅41947.

It can be written as a sum of positive squares in 2 ways, for example, as 13689 + 99856 = 117^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 113545 - 2³ = 113537 is a prime.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11350 + ... + 11359.

It is an arithmetic number, because the mean of its divisors is an integer number (34065).

2¹¹³⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

113545 is a deficient number, since it is larger than the sum of its proper divisors (22715).

113545 is an equidigital number, since it uses as much as digits as its factorization.

113545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22714.

The product of its digits is 300, while the sum is 19.

The square root of 113545 is about 336.9643898100. The cubic root of 113545 is about 48.4234808544.

Subtracting from 113545 its sum of digits (19), we obtain a triangular number (113526 = T₄₇₆).

Adding to 113545 its reverse (545311), we get a palindrome (658856).

The spelling of 113545 in words is "one hundred thirteen thousand, five hundred forty-five".