2757257 has 2 divisors, whose sum is σ = 2757258. Its totient is φ = 2757256.

The previous prime is 2757229. The next prime is 2757259. The reversal of 2757257 is 7527572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2383936 + 373321 = 1544^2 + 611^2 .

It is a cyclic number.

It is not a de Polignac number, because 2757257 - 2⁶ = 2757193 is a prime.

Together with 2757259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2757259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378628 + 1378629.

It is an arithmetic number, because the mean of its divisors is an integer number (1378629).

2^2757257 is an apocalyptic number.

It is an amenable number.

2757257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2757257 is an equidigital number, since it uses as much as digits as its factorization.

2757257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34300, while the sum is 35.

The square root of 2757257 is about 1660.4990213788. The cubic root of 2757257 is about 140.2250970705.

The spelling of 2757257 in words is "two million, seven hundred fifty-seven thousand, two hundred fifty-seven".