2745731 has 2 divisors, whose sum is σ = 2745732. Its totient is φ = 2745730.

The previous prime is 2745719. The next prime is 2745737. The reversal of 2745731 is 1375472.

2745731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2745731 - 2¹⁴ = 2729347 is a prime.

It is a super-2 number, since 2×2745731² = 15078077448722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2745694 and 2745703.

It is not a weakly prime, because it can be changed into another prime (2745737) 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 as a sum of consecutive naturals, namely, 1372865 + 1372866.

It is an arithmetic number, because the mean of its divisors is an integer number (1372866).

2^2745731 is an apocalyptic number.

2745731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2745731 is an equidigital number, since it uses as much as digits as its factorization.

2745731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 29.

The square root of 2745731 is about 1657.0247433276. The cubic root of 2745731 is about 140.0294325874.

The spelling of 2745731 in words is "two million, seven hundred forty-five thousand, seven hundred thirty-one".