2045791 has 8 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 1847640.

The previous prime is 2045789. The next prime is 2045819. The reversal of 2045791 is 1975402.

It is a happy number.

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 2045791 - 2¹ = 2045789 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 (2045731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450 + ... + 2488.

It is an arithmetic number, because the mean of its divisors is an integer number (280800).

2^2045791 is an apocalyptic number.

2045791 is a deficient number, since it is larger than the sum of its proper divisors (200609).

2045791 is a wasteful number, since it uses less digits than its factorization.

2045791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2045791 is about 1430.3115045332. The cubic root of 2045791 is about 126.9464092821.

It can be divided in two parts, 204 and 5791, that added together give a palindrome (5995).

The spelling of 2045791 in words is "two million, forty-five thousand, seven hundred ninety-one".