2745491 has 4 divisors (see below), whose sum is σ = 3137712. Its totient is φ = 2353272.

The previous prime is 2745473. The next prime is 2745497. The reversal of 2745491 is 1945472.

It is a happy number.

2745491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2745491 - 2¹⁴ = 2729107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2745497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196100 + ... + 196113.

It is an arithmetic number, because the mean of its divisors is an integer number (784428).

2^2745491 is an apocalyptic number.

2745491 is a deficient number, since it is larger than the sum of its proper divisors (392221).

2745491 is an equidigital number, since it uses as much as digits as its factorization.

2745491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392220.

The product of its digits is 10080, while the sum is 32.

The square root of 2745491 is about 1656.9523227902. The cubic root of 2745491 is about 140.0253525515.

The spelling of 2745491 in words is "two million, seven hundred forty-five thousand, four hundred ninety-one".