1355191 has 2 divisors, whose sum is σ = 1355192. Its totient is φ = 1355190.

The previous prime is 1355153. The next prime is 1355219. The reversal of 1355191 is 1915531.

It is a strong prime.

It is an emirp because it is prime and its reverse (1915531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1355191 - 2⁷ = 1355063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355131) 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, 677595 + 677596.

It is an arithmetic number, because the mean of its divisors is an integer number (677596).

2^1355191 is an apocalyptic number.

1355191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355191 is an equidigital number, since it uses as much as digits as its factorization.

1355191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 675, while the sum is 25.

The square root of 1355191 is about 1164.1267113163. The cubic root of 1355191 is about 110.6624216126.

The spelling of 1355191 in words is "one million, three hundred fifty-five thousand, one hundred ninety-one".