2775943 has 2 divisors, whose sum is σ = 2775944. Its totient is φ = 2775942.

The previous prime is 2775931. The next prime is 2775959. The reversal of 2775943 is 3495772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2775943 - 2⁵ = 2775911 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 7⁷ + 7⁷ + 5⁷ + 9² + 4¹⁰ + 3³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2775043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387971 + 1387972.

It is an arithmetic number, because the mean of its divisors is an integer number (1387972).

2^2775943 is an apocalyptic number.

2775943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2775943 is an equidigital number, since it uses as much as digits as its factorization.

2775943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 2775943 is about 1666.1161424102. The cubic root of 2775943 is about 140.5411538365.

The spelling of 2775943 in words is "two million, seven hundred seventy-five thousand, nine hundred forty-three".