2805145 has 8 divisors (see below), whose sum is σ = 3847104. Its totient is φ = 1923504.

The previous prime is 2805137. The next prime is 2805157. The reversal of 2805145 is 5415082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2805145 - 2³ = 2805137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40039 + ... + 40108.

It is an arithmetic number, because the mean of its divisors is an integer number (480888).

2^2805145 is an apocalyptic number.

It is an amenable number.

2805145 is a deficient number, since it is larger than the sum of its proper divisors (1041959).

2805145 is an equidigital number, since it uses as much as digits as its factorization.

2805145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80159.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2805145 is about 1674.8567102890. The cubic root of 2805145 is about 141.0322512279.

The spelling of 2805145 in words is "two million, eight hundred five thousand, one hundred forty-five".