109775 has 6 divisors (see below), whose sum is σ = 136152. Its totient is φ = 87800.

The previous prime is 109751. The next prime is 109789. The reversal of 109775 is 577901.

It is not a de Polignac number, because 109775 - 2⁸ = 109519 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 2171 + ... + 2220.

It is an arithmetic number, because the mean of its divisors is an integer number (22692).

2¹⁰⁹⁷⁷⁵ is an apocalyptic number.

109775 is a deficient number, since it is larger than the sum of its proper divisors (26377).

109775 is an equidigital number, since it uses as much as digits as its factorization.

109775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401 (or 4396 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 29.

The square root of 109775 is about 331.3231051406. The cubic root of 109775 is about 47.8815074994.

Subtracting from 109775 its sum of digits (29), we obtain a triangular number (109746 = T₄₆₈).

The spelling of 109775 in words is "one hundred nine thousand, seven hundred seventy-five".