2305791 has 6 divisors (see below), whose sum is σ = 3330600. Its totient is φ = 1537188.

The previous prime is 2305781. The next prime is 2305837. The reversal of 2305791 is 1975032.

It is not a de Polignac number, because 2305791 - 2⁹ = 2305279 is a prime.

2305791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2305711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128091 + ... + 128108.

It is an arithmetic number, because the mean of its divisors is an integer number (555100).

2^2305791 is an apocalyptic number.

2305791 is a deficient number, since it is larger than the sum of its proper divisors (1024809).

2305791 is a wasteful number, since it uses less digits than its factorization.

2305791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256205 (or 256202 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 2305791 is about 1518.4831247004. The cubic root of 2305791 is about 132.1113041920. Note that the first 3 decimals are identical.

The spelling of 2305791 in words is "two million, three hundred five thousand, seven hundred ninety-one".