1257017 has 2 divisors, whose sum is σ = 1257018. Its totient is φ = 1257016.

The previous prime is 1257013. The next prime is 1257029. The reversal of 1257017 is 7107521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1008016 + 249001 = 1004^2 + 499^2 .

It is an emirp because it is prime and its reverse (7107521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1257017 - 2² = 1257013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1256983 and 1257001.

It is not a weakly prime, because it can be changed into another prime (1257013) 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, 628508 + 628509.

It is an arithmetic number, because the mean of its divisors is an integer number (628509).

2^1257017 is an apocalyptic number.

It is an amenable number.

1257017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257017 is an equidigital number, since it uses as much as digits as its factorization.

1257017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 1257017 is about 1121.1676948610. The cubic root of 1257017 is about 107.9229274074.

The spelling of 1257017 in words is "one million, two hundred fifty-seven thousand, seventeen".