2757889 has 2 divisors, whose sum is σ = 2757890. Its totient is φ = 2757888.

The previous prime is 2757883. The next prime is 2757901. The reversal of 2757889 is 9887572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2585664 + 172225 = 1608^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2757889 - 2⁷ = 2757761 is a prime.

It is not a weakly prime, because it can be changed into another prime (2757883) 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, 1378944 + 1378945.

It is an arithmetic number, because the mean of its divisors is an integer number (1378945).

2^2757889 is an apocalyptic number.

It is an amenable number.

2757889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2757889 is an equidigital number, since it uses as much as digits as its factorization.

2757889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 46.

The square root of 2757889 is about 1660.6893147124. The cubic root of 2757889 is about 140.2358100715.

The spelling of 2757889 in words is "two million, seven hundred fifty-seven thousand, eight hundred eighty-nine".