1093591 has 2 divisors, whose sum is σ = 1093592. Its totient is φ = 1093590.

The previous prime is 1093577. The next prime is 1093633. The reversal of 1093591 is 1953901.

It is a weak prime.

It is an emirp because it is prime and its reverse (1953901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1093591 is a prime.

1093591 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1093531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546795 + 546796.

It is an arithmetic number, because the mean of its divisors is an integer number (546796).

2^1093591 is an apocalyptic number.

1093591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1093591 is an equidigital number, since it uses as much as digits as its factorization.

1093591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 1093591 is about 1045.7490138652. The cubic root of 1093591 is about 103.0271396105.

It can be divided in two parts, 10935 and 91, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 1093591 in words is "one million, ninety-three thousand, five hundred ninety-one".