1091063 has 2 divisors, whose sum is σ = 1091064. Its totient is φ = 1091062.

The previous prime is 1091059. The next prime is 1091071. The reversal of 1091063 is 3601901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1091063 - 2² = 1091059 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 (1091003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545531 + 545532.

It is an arithmetic number, because the mean of its divisors is an integer number (545532).

2^1091063 is an apocalyptic number.

1091063 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091063 is an equidigital number, since it uses as much as digits as its factorization.

1091063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1091063 is about 1044.5396115036. The cubic root of 1091063 is about 102.9476907858.

Subtracting from 1091063 its product of nonzero digits (162), we obtain a palindrome (1090901).

Adding to 1091063 its reverse (3601901), we get a palindrome (4692964).

The spelling of 1091063 in words is "one million, ninety-one thousand, sixty-three".