109575145 has 4 divisors (see below), whose sum is σ = 131490180. Its totient is φ = 87660112.

The previous prime is 109575131. The next prime is 109575161. The reversal of 109575145 is 541575901.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13162384 + 96412761 = 3628^2 + 9819^2 .

It is a cyclic number.

It is not a de Polignac number, because 109575145 - 2¹¹ = 109573097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10957510 + ... + 10957519.

It is an arithmetic number, because the mean of its divisors is an integer number (32872545).

Almost surely, 2^109575145 is an apocalyptic number.

It is an amenable number.

109575145 is a deficient number, since it is larger than the sum of its proper divisors (21915035).

109575145 is an equidigital number, since it uses as much as digits as its factorization.

109575145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21915034.

The product of its (nonzero) digits is 31500, while the sum is 37.

The square root of 109575145 is about 10467.8147194149. The cubic root of 109575145 is about 478.5243235522.

The spelling of 109575145 in words is "one hundred nine million, five hundred seventy-five thousand, one hundred forty-five".