2805755345 has 4 divisors (see below), whose sum is σ = 3366906420. Its totient is φ = 2244604272.

The previous prime is 2805755333. The next prime is 2805755353. The reversal of 2805755345 is 5435575082.

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 571018816 + 2234736529 = 23896^2 + 47273^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805755345 - 2²⁰ = 2804706769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2805755296 and 2805755305.

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, 280575530 + ... + 280575539.

It is an arithmetic number, because the mean of its divisors is an integer number (841726605).

Almost surely, 2^2805755345 is an apocalyptic number.

It is an amenable number.

2805755345 is a deficient number, since it is larger than the sum of its proper divisors (561151075).

2805755345 is an equidigital number, since it uses as much as digits as its factorization.

2805755345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561151074.

The product of its (nonzero) digits is 840000, while the sum is 44.

The square root of 2805755345 is about 52969.3812027288. The cubic root of 2805755345 is about 1410.4247911122.

The spelling of 2805755345 in words is "two billion, eight hundred five million, seven hundred fifty-five thousand, three hundred forty-five".