109521273 has 8 divisors (see below), whose sum is σ = 146113600. Its totient is φ = 72971568.

The previous prime is 109521271. The next prime is 109521277. The reversal of 109521273 is 372125901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109521273 - 2¹ = 109521271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109521273.

It is not an unprimeable number, because it can be changed into a prime (109521271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4078 + ... + 15351.

It is an arithmetic number, because the mean of its divisors is an integer number (18264200).

Almost surely, 2^109521273 is an apocalyptic number.

It is an amenable number.

109521273 is a deficient number, since it is larger than the sum of its proper divisors (36592327).

109521273 is a wasteful number, since it uses less digits than its factorization.

109521273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21311.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 109521273 is about 10465.2411821228. The cubic root of 109521273 is about 478.4458894382.

The spelling of 109521273 in words is "one hundred nine million, five hundred twenty-one thousand, two hundred seventy-three".