1322857 has 2 divisors, whose sum is σ = 1322858. Its totient is φ = 1322856.

The previous prime is 1322851. The next prime is 1322869. The reversal of 1322857 is 7582231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1125721 + 197136 = 1061^2 + 444^2 .

It is an emirp because it is prime and its reverse (7582231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1322857 - 2¹⁹ = 798569 is a prime.

It is a Chen prime.

It is an Ulam number.

1322857 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1322851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661428 + 661429.

It is an arithmetic number, because the mean of its divisors is an integer number (661429).

2^1322857 is an apocalyptic number.

It is an amenable number.

1322857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322857 is an equidigital number, since it uses as much as digits as its factorization.

1322857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 1322857 is about 1150.1552069177. The cubic root of 1322857 is about 109.7752158995.

The spelling of 1322857 in words is "one million, three hundred twenty-two thousand, eight hundred fifty-seven".