2105957 has 4 divisors (see below), whose sum is σ = 2406816. Its totient is φ = 1805100.

The previous prime is 2105953. The next prime is 2105963. The reversal of 2105957 is 7595012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2105957 - 2² = 2105953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150419 + ... + 150432.

It is an arithmetic number, because the mean of its divisors is an integer number (601704).

2^2105957 is an apocalyptic number.

It is an amenable number.

2105957 is a deficient number, since it is larger than the sum of its proper divisors (300859).

2105957 is an equidigital number, since it uses as much as digits as its factorization.

2105957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300858.

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

The square root of 2105957 is about 1451.1915793581. The cubic root of 2105957 is about 128.1788880598.

The spelling of 2105957 in words is "two million, one hundred five thousand, nine hundred fifty-seven".