109528985 has 4 divisors (see below), whose sum is σ = 131434788. Its totient is φ = 87623184.

The previous prime is 109528961. The next prime is 109529033. The reversal of 109528985 is 589825901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589825901 = 7 ⋅84260843.

It can be written as a sum of positive squares in 2 ways, for example, as 70241161 + 39287824 = 8381^2 + 6268^2 .

It is a cyclic number.

It is not a de Polignac number, because 109528985 - 2⁸ = 109528729 is a prime.

It is a Duffinian number.

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, 10952894 + ... + 10952903.

It is an arithmetic number, because the mean of its divisors is an integer number (32858697).

Almost surely, 2^109528985 is an apocalyptic number.

It is an amenable number.

109528985 is a deficient number, since it is larger than the sum of its proper divisors (21905803).

109528985 is an equidigital number, since it uses as much as digits as its factorization.

109528985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21905802.

The product of its (nonzero) digits is 259200, while the sum is 47.

The square root of 109528985 is about 10465.6096334614. The cubic root of 109528985 is about 478.4571191838.

The spelling of 109528985 in words is "one hundred nine million, five hundred twenty-eight thousand, nine hundred eighty-five".