111545 has 8 divisors (see below), whose sum is σ = 153024. Its totient is φ = 76464.

The previous prime is 111539. The next prime is 111577. The reversal of 111545 is 545111.

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 111545 - 2¹² = 107449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1559 + ... + 1628.

It is an arithmetic number, because the mean of its divisors is an integer number (19128).

2¹¹¹⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

111545 is a deficient number, since it is larger than the sum of its proper divisors (41479).

111545 is an equidigital number, since it uses as much as digits as its factorization.

111545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199.

The product of its digits is 100, while the sum is 17.

The square root of 111545 is about 333.9835325282. The cubic root of 111545 is about 48.1374820043.

Adding to 111545 its reverse (545111), we get a palindrome (656656).

It can be divided in two parts, 111 and 545, that added together give a palindrome (656).

The spelling of 111545 in words is "one hundred eleven thousand, five hundred forty-five".