2745917 has 4 divisors (see below), whose sum is σ = 2776860. Its totient is φ = 2714976.

The previous prime is 2745913. The next prime is 2745929. The reversal of 2745917 is 7195472.

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 401956 + 2343961 = 634^2 + 1531^2 .

It is a cyclic number.

It is not a de Polignac number, because 2745917 - 2² = 2745913 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 (2745913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15338 + ... + 15515.

It is an arithmetic number, because the mean of its divisors is an integer number (694215).

2^2745917 is an apocalyptic number.

It is an amenable number.

2745917 is a deficient number, since it is larger than the sum of its proper divisors (30943).

2745917 is an equidigital number, since it uses as much as digits as its factorization.

2745917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30942.

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

The square root of 2745917 is about 1657.0808670671. The cubic root of 2745917 is about 140.0325944517.

The spelling of 2745917 in words is "two million, seven hundred forty-five thousand, nine hundred seventeen".