1252817 has 2 divisors, whose sum is σ = 1252818. Its totient is φ = 1252816.

The previous prime is 1252799. The next prime is 1252819. The reversal of 1252817 is 7182521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1234321 + 18496 = 1111^2 + 136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252817 - 2¹² = 1248721 is a prime.

Together with 1252819, 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 (1252819) 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, 626408 + 626409.

It is an arithmetic number, because the mean of its divisors is an integer number (626409).

2^1252817 is an apocalyptic number.

It is an amenable number.

1252817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252817 is an equidigital number, since it uses as much as digits as its factorization.

1252817 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 1252817 is about 1119.2930804754. The cubic root of 1252817 is about 107.8025943570.

The spelling of 1252817 in words is "one million, two hundred fifty-two thousand, eight hundred seventeen".