11109375 has 42 divisors (see below), whose sum is σ = 20312240. Its totient is φ = 5850000.

The previous prime is 11109367. The next prime is 11109379. The reversal of 11109375 is 57390111.

It is a happy number.

It is not a de Polignac number, because 11109375 - 2³ = 11109367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109379) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 140586 + ... + 140664.

Almost surely, 2^11109375 is an apocalyptic number.

11109375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11109375 is a deficient number, since it is larger than the sum of its proper divisors (9202865).

11109375 is an frugal number, since it uses more digits than its factorization.

11109375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 11109375 is about 3333.0729064933. The cubic root of 11109375 is about 223.1326939889.

Adding to 11109375 its reverse (57390111), we get a palindrome (68499486).

The spelling of 11109375 in words is "eleven million, one hundred nine thousand, three hundred seventy-five".