2745791 has 4 divisors (see below), whose sum is σ = 2749392. Its totient is φ = 2742192.

The previous prime is 2745781. The next prime is 2745797. The reversal of 2745791 is 1975472.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2745791 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 (2745797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155 + ... + 2348.

It is an arithmetic number, because the mean of its divisors is an integer number (687348).

2^2745791 is an apocalyptic number.

2745791 is a deficient number, since it is larger than the sum of its proper divisors (3601).

2745791 is a wasteful number, since it uses less digits than its factorization.

2745791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600.

The product of its digits is 17640, while the sum is 35.

The square root of 2745791 is about 1657.0428479674. The cubic root of 2745791 is about 140.0304525592.

The spelling of 2745791 in words is "two million, seven hundred forty-five thousand, seven hundred ninety-one".