1355243 has 2 divisors, whose sum is σ = 1355244. Its totient is φ = 1355242.

The previous prime is 1355219. The next prime is 1355261. The reversal of 1355243 is 3425531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1355243 - 2⁸ = 1354987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355293) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677621 + 677622.

It is an arithmetic number, because the mean of its divisors is an integer number (677622).

2^1355243 is an apocalyptic number.

1355243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355243 is an equidigital number, since it uses as much as digits as its factorization.

1355243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 23.

The square root of 1355243 is about 1164.1490454405. The cubic root of 1355243 is about 110.6638370029.

The spelling of 1355243 in words is "one million, three hundred fifty-five thousand, two hundred forty-three".