1005287 has 2 divisors, whose sum is σ = 1005288. Its totient is φ = 1005286.

The previous prime is 1005269. The next prime is 1005293. The reversal of 1005287 is 7825001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1005287 - 2⁶ = 1005223 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1005217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502643 + 502644.

It is an arithmetic number, because the mean of its divisors is an integer number (502644).

2^1005287 is an apocalyptic number.

1005287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005287 is an equidigital number, since it uses as much as digits as its factorization.

1005287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 1005287 is about 1002.6400151600. The cubic root of 1005287 is about 100.1759236605.

The spelling of 1005287 in words is "one million, five thousand, two hundred eighty-seven".