1355911 has 4 divisors (see below), whose sum is σ = 1389024. Its totient is φ = 1322800.

The previous prime is 1355891. The next prime is 1355917. The reversal of 1355911 is 1195531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1195531 = 761 ⋅1571.

It is a cyclic number.

It is not a de Polignac number, because 1355911 - 2⁹ = 1355399 is a prime.

It is a Duffinian number.

1355911 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16495 + ... + 16576.

It is an arithmetic number, because the mean of its divisors is an integer number (347256).

2^1355911 is an apocalyptic number.

1355911 is a deficient number, since it is larger than the sum of its proper divisors (33113).

1355911 is an equidigital number, since it uses as much as digits as its factorization.

1355911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33112.

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

The square root of 1355911 is about 1164.4359149391. The cubic root of 1355911 is about 110.6820161045.

The spelling of 1355911 in words is "one million, three hundred fifty-five thousand, nine hundred eleven".