1355823 has 12 divisors (see below), whose sum is σ = 2238288. Its totient is φ = 774720.

The previous prime is 1355819. The next prime is 1355831. The reversal of 1355823 is 3285531.

It is not a de Polignac number, because 1355823 - 2² = 1355819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10698 + ... + 10823.

It is an arithmetic number, because the mean of its divisors is an integer number (186524).

2^1355823 is an apocalyptic number.

1355823 is a deficient number, since it is larger than the sum of its proper divisors (882465).

1355823 is a wasteful number, since it uses less digits than its factorization.

1355823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21534 (or 21531 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1355823 is about 1164.3981277896. The cubic root of 1355823 is about 110.6796215943.

The spelling of 1355823 in words is "one million, three hundred fifty-five thousand, eight hundred twenty-three".