2297857 has 2 divisors, whose sum is σ = 2297858. Its totient is φ = 2297856.

The previous prime is 2297849. The next prime is 2297863. The reversal of 2297857 is 7587922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1449616 + 848241 = 1204^2 + 921^2 .

It is a cyclic number.

It is not a de Polignac number, because 2297857 - 2³ = 2297849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2297807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1148928 + 1148929.

It is an arithmetic number, because the mean of its divisors is an integer number (1148929).

It is a Proth number, since it is equal to 561 ⋅ 2¹² + 1 and 561 < 2¹².

2^2297857 is an apocalyptic number.

It is an amenable number.

2297857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2297857 is an equidigital number, since it uses as much as digits as its factorization.

2297857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 2297857 is about 1515.8683979818. The cubic root of 2297857 is about 131.9596027284.

It can be divided in two parts, 22 and 97857, that added together give a palindrome (97879).

The spelling of 2297857 in words is "two million, two hundred ninety-seven thousand, eight hundred fifty-seven".