2790257 has 2 divisors, whose sum is σ = 2790258. Its totient is φ = 2790256.

The previous prime is 2790253. The next prime is 2790259. The reversal of 2790257 is 7520972.

2790257 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 can be written as a sum of positive squares in only one way, i.e., 2637376 + 152881 = 1624^2 + 391^2 .

It is a cyclic number.

It is not a de Polignac number, because 2790257 - 2² = 2790253 is a prime.

Together with 2790259, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2790251) 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, 1395128 + 1395129.

It is an arithmetic number, because the mean of its divisors is an integer number (1395129).

2^2790257 is an apocalyptic number.

It is an amenable number.

2790257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2790257 is an equidigital number, since it uses as much as digits as its factorization.

2790257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 2790257 is about 1670.4062380152. The cubic root of 2790257 is about 140.7823041046.

The spelling of 2790257 in words is "two million, seven hundred ninety thousand, two hundred fifty-seven".