109545 has 16 divisors (see below), whose sum is σ = 179520. Its totient is φ = 57024.

The previous prime is 109541. The next prime is 109547. The reversal of 109545 is 545901.

It is not a de Polignac number, because 109545 - 2² = 109541 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109545.

It is not an unprimeable number, because it can be changed into a prime (109541) 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 15 ways as a sum of consecutive naturals, for example, 951 + ... + 1059.

It is an arithmetic number, because the mean of its divisors is an integer number (11220).

2¹⁰⁹⁵⁴⁵ is an apocalyptic number.

109545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109545 is a deficient number, since it is larger than the sum of its proper divisors (69975).

109545 is a wasteful number, since it uses less digits than its factorization.

109545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 109545 is about 330.9758299332. The cubic root of 109545 is about 47.8480437569.

The spelling of 109545 in words is "one hundred nine thousand, five hundred forty-five".