2045887 has 4 divisors (see below), whose sum is σ = 2050576. Its totient is φ = 2041200.

The previous prime is 2045881. The next prime is 2045891. The reversal of 2045887 is 7885402.

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

It is a cyclic number.

It is not a de Polignac number, because 2045887 - 2⁷ = 2045759 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 (2045881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1614 + ... + 2587.

It is an arithmetic number, because the mean of its divisors is an integer number (512644).

2^2045887 is an apocalyptic number.

2045887 is a deficient number, since it is larger than the sum of its proper divisors (4689).

2045887 is an equidigital number, since it uses as much as digits as its factorization.

2045887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 2045887 is about 1430.3450632627. The cubic root of 2045887 is about 126.9483949305.

The spelling of 2045887 in words is "two million, forty-five thousand, eight hundred eighty-seven".