2754721 has 2 divisors, whose sum is σ = 2754722. Its totient is φ = 2754720.

The previous prime is 2754707. The next prime is 2754743. The reversal of 2754721 is 1274572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2624400 + 130321 = 1620^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 2754721 - 2¹³ = 2746529 is a prime.

2754721 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2754721.

It is not a weakly prime, because it can be changed into another prime (2754701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1377360 + 1377361.

It is an arithmetic number, because the mean of its divisors is an integer number (1377361).

2^2754721 is an apocalyptic number.

It is an amenable number.

2754721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2754721 is an equidigital number, since it uses as much as digits as its factorization.

2754721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3920, while the sum is 28.

The square root of 2754721 is about 1659.7352198468. The cubic root of 2754721 is about 140.1820929875.

The spelling of 2754721 in words is "two million, seven hundred fifty-four thousand, seven hundred twenty-one".