2105045 has 4 divisors (see below), whose sum is σ = 2526060. Its totient is φ = 1684032.

The previous prime is 2105027. The next prime is 2105069. The reversal of 2105045 is 5405012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 908209 + 1196836 = 953^2 + 1094^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105045 - 2¹⁰ = 2104021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210500 + ... + 210509.

It is an arithmetic number, because the mean of its divisors is an integer number (631515).

2^2105045 is an apocalyptic number.

It is an amenable number.

2105045 is a deficient number, since it is larger than the sum of its proper divisors (421015).

2105045 is an equidigital number, since it uses as much as digits as its factorization.

2105045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421014.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2105045 is about 1450.8773207959. The cubic root of 2105045 is about 128.1603824549.

The spelling of 2105045 in words is "two million, one hundred five thousand, forty-five".