2730257 has 2 divisors, whose sum is σ = 2730258. Its totient is φ = 2730256.

The previous prime is 2730241. The next prime is 2730271. The reversal of 2730257 is 7520372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2588881 + 141376 = 1609^2 + 376^2 .

It is a cyclic number.

It is not a de Polignac number, because 2730257 - 2⁴ = 2730241 is a prime.

It is not a weakly prime, because it can be changed into another prime (2730157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365128 + 1365129.

It is an arithmetic number, because the mean of its divisors is an integer number (1365129).

2^2730257 is an apocalyptic number.

It is an amenable number.

2730257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2730257 is an equidigital number, since it uses as much as digits as its factorization.

2730257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 2730257 is about 1652.3489340935. The cubic root of 2730257 is about 139.7658842270.

The spelling of 2730257 in words is "two million, seven hundred thirty thousand, two hundred fifty-seven".