1022797 has 2 divisors, whose sum is σ = 1022798. Its totient is φ = 1022796.

The previous prime is 1022773. The next prime is 1022821. The reversal of 1022797 is 7972201.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1022773) and next prime (1022821).

It can be written as a sum of positive squares in only one way, i.e., 1022121 + 676 = 1011^2 + 26^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022797 is a prime.

It is a super-2 number, since 2×1022797² = 2092227406418, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

1022797 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020797) 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, 511398 + 511399.

It is an arithmetic number, because the mean of its divisors is an integer number (511399).

2^1022797 is an apocalyptic number.

It is an amenable number.

1022797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022797 is an equidigital number, since it uses as much as digits as its factorization.

1022797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1022797 is about 1011.3342671936. The cubic root of 1022797 is about 100.7541975605.

Adding to 1022797 its reverse (7972201), we get a palindrome (8994998).

The spelling of 1022797 in words is "one million, twenty-two thousand, seven hundred ninety-seven".