113573 has 4 divisors (see below), whose sum is σ = 114540. Its totient is φ = 112608.

The previous prime is 113567. The next prime is 113591. The reversal of 113573 is 375311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 66049 + 47524 = 257^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 113573 - 2⁴ = 113557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113513) 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 3 ways as a sum of consecutive naturals, for example, 278 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (28635).

2¹¹³⁵⁷³ is an apocalyptic number.

It is an amenable number.

113573 is a deficient number, since it is larger than the sum of its proper divisors (967).

113573 is an equidigital number, since it uses as much as digits as its factorization.

113573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966.

The product of its digits is 315, while the sum is 20.

The square root of 113573 is about 337.0059346658. The cubic root of 113573 is about 48.4274609094.

Adding to 113573 its reverse (375311), we get a palindrome (488884).

It can be divided in two parts, 113 and 573, that added together give a palindrome (686).

The spelling of 113573 in words is "one hundred thirteen thousand, five hundred seventy-three".