1075391 has 2 divisors, whose sum is σ = 1075392. Its totient is φ = 1075390.

The previous prime is 1075357. The next prime is 1075397. The reversal of 1075391 is 1935701.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1075391 - 2¹⁴ = 1059007 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1075391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1075397) 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, 537695 + 537696.

It is an arithmetic number, because the mean of its divisors is an integer number (537696).

2^1075391 is an apocalyptic number.

1075391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075391 is an equidigital number, since it uses as much as digits as its factorization.

1075391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 1075391 is about 1037.0106074674. The cubic root of 1075391 is about 102.4523990755.

The spelling of 1075391 in words is "one million, seventy-five thousand, three hundred ninety-one".