2105975 has 6 divisors (see below), whose sum is σ = 2611440. Its totient is φ = 1684760.

The previous prime is 2105969. The next prime is 2105993. The reversal of 2105975 is 5795012.

It is not a de Polignac number, because 2105975 - 2⁶ = 2105911 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42095 + ... + 42144.

It is an arithmetic number, because the mean of its divisors is an integer number (435240).

2^2105975 is an apocalyptic number.

2105975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2105975 is a deficient number, since it is larger than the sum of its proper divisors (505465).

2105975 is an equidigital number, since it uses as much as digits as its factorization.

2105975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84249 (or 84244 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 2105975 is about 1451.1977811449. The cubic root of 2105975 is about 128.1792532482.

The spelling of 2105975 in words is "two million, one hundred five thousand, nine hundred seventy-five".