2109375 has 32 divisors (see below), whose sum is σ = 3906240. Its totient is φ = 1125000.

The previous prime is 2109329. The next prime is 2109391. The reversal of 2109375 is 5739012.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a trimorphic number since its cube, 9385585784912109375, ends in 2109375.

It is not a de Polignac number, because 2109375 - 2⁶ = 2109311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421873 + ... + 421877.

It is an arithmetic number, because the mean of its divisors is an integer number (122070).

2^2109375 is an apocalyptic number.

2109375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2109375 is a deficient number, since it is larger than the sum of its proper divisors (1796865).

2109375 is an frugal number, since it uses more digits than its factorization.

2109375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44 (or 8 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 2109375 is about 1452.3687548278. The cubic root of 2109375 is about 128.2481960008.

2109375 divided by its sum of digits (27) gives a 7-th power (78125 = 5⁷).

The spelling of 2109375 in words is "two million, one hundred nine thousand, three hundred seventy-five".