1097543 has 2 divisors, whose sum is σ = 1097544. Its totient is φ = 1097542.

The previous prime is 1097539. The next prime is 1097549. The reversal of 1097543 is 3457901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1097543 - 2² = 1097539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1097549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548771 + 548772.

It is an arithmetic number, because the mean of its divisors is an integer number (548772).

2^1097543 is an apocalyptic number.

1097543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097543 is an equidigital number, since it uses as much as digits as its factorization.

1097543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1097543 is about 1047.6368645671. The cubic root of 1097543 is about 103.1510963035.

The spelling of 1097543 in words is "one million, ninety-seven thousand, five hundred forty-three".