2779061 has 2 divisors, whose sum is σ = 2779062. Its totient is φ = 2779060.

The previous prime is 2779031. The next prime is 2779069. The reversal of 2779061 is 1609772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1716100 + 1062961 = 1310^2 + 1031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2779061 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2779069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389530 + 1389531.

It is an arithmetic number, because the mean of its divisors is an integer number (1389531).

2^2779061 is an apocalyptic number.

It is an amenable number.

2779061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2779061 is an equidigital number, since it uses as much as digits as its factorization.

2779061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 2779061 is about 1667.0515888838. The cubic root of 2779061 is about 140.5937537820.

The spelling of 2779061 in words is "two million, seven hundred seventy-nine thousand, sixty-one".