1257283 has 4 divisors (see below), whose sum is σ = 1260040. Its totient is φ = 1254528.

The previous prime is 1257281. The next prime is 1257293. The reversal of 1257283 is 3827521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3827521 = 379 ⋅10099.

It is a cyclic number.

It is not a de Polignac number, because 1257283 - 2¹ = 1257281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1257281) 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 in 3 ways as a sum of consecutive naturals, for example, 513 + ... + 1666.

It is an arithmetic number, because the mean of its divisors is an integer number (315010).

2^1257283 is an apocalyptic number.

1257283 is a deficient number, since it is larger than the sum of its proper divisors (2757).

1257283 is an equidigital number, since it uses as much as digits as its factorization.

1257283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756.

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

The square root of 1257283 is about 1121.2863149080. The cubic root of 1257283 is about 107.9305394693.

It can be divided in two parts, 1257 and 283, that added together give a triangular number (1540 = T₅₅).

The spelling of 1257283 in words is "one million, two hundred fifty-seven thousand, two hundred eighty-three".