1122857 has 2 divisors, whose sum is σ = 1122858. Its totient is φ = 1122856.

The previous prime is 1122841. The next prime is 1122887. The reversal of 1122857 is 7582211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1032256 + 90601 = 1016^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122857 - 2⁴ = 1122841 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (1122887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561428 + 561429.

It is an arithmetic number, because the mean of its divisors is an integer number (561429).

2^1122857 is an apocalyptic number.

It is an amenable number.

1122857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122857 is an equidigital number, since it uses as much as digits as its factorization.

1122857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 26.

The square root of 1122857 is about 1059.6494703438. The cubic root of 1122857 is about 103.9381103666.

The spelling of 1122857 in words is "one million, one hundred twenty-two thousand, eight hundred fifty-seven".