109501 has 4 divisors (see below), whose sum is σ = 125152. Its totient is φ = 93852.

The previous prime is 109481. The next prime is 109507. The reversal of 109501 is 105901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 105901 = 137 ⋅773.

It is a cyclic number.

It is not a de Polignac number, because 109501 - 2⁵ = 109469 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7815 + ... + 7828.

It is an arithmetic number, because the mean of its divisors is an integer number (31288).

2¹⁰⁹⁵⁰¹ is an apocalyptic number.

It is an amenable number.

109501 is a deficient number, since it is larger than the sum of its proper divisors (15651).

109501 is an equidigital number, since it uses as much as digits as its factorization.

109501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15650.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 109501 is about 330.9093531467. The cubic root of 109501 is about 47.8416366613.

Subtracting from 109501 its reverse (105901), we obtain a square (3600 = 60²).

The spelling of 109501 in words is "one hundred nine thousand, five hundred one".