109559 has 4 divisors (see below), whose sum is σ = 110880. Its totient is φ = 108240.

The previous prime is 109547. The next prime is 109567. The reversal of 109559 is 955901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109559 - 2⁸ = 109303 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109559.

It is not an unprimeable number, because it can be changed into a prime (109519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527 + ... + 704.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2¹⁰⁹⁵⁵⁹ is an apocalyptic number.

109559 is a deficient number, since it is larger than the sum of its proper divisors (1321).

109559 is an equidigital number, since it uses as much as digits as its factorization.

109559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320.

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 109559 is about 330.9969788382. The cubic root of 109559 is about 47.8500820185.

The spelling of 109559 in words is "one hundred nine thousand, five hundred fifty-nine".