2075945 has 4 divisors (see below), whose sum is σ = 2491140. Its totient is φ = 1660752.

The previous prime is 2075929. The next prime is 2075947. The reversal of 2075945 is 5495702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5495702 = 2 ⋅2747851.

It can be written as a sum of positive squares in 2 ways, for example, as 1510441 + 565504 = 1229^2 + 752^2 .

It is a cyclic number.

It is not a de Polignac number, because 2075945 - 2⁴ = 2075929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2075947) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 207590 + ... + 207599.

It is an arithmetic number, because the mean of its divisors is an integer number (622785).

2^2075945 is an apocalyptic number.

It is an amenable number.

2075945 is a deficient number, since it is larger than the sum of its proper divisors (415195).

2075945 is an equidigital number, since it uses as much as digits as its factorization.

2075945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415194.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 2075945 is about 1440.8140060396. The cubic root of 2075945 is about 127.5670799140.

The spelling of 2075945 in words is "two million, seventy-five thousand, nine hundred forty-five".