1355856 has 40 divisors (see below), whose sum is σ = 3583104. Its totient is φ = 441600.

The previous prime is 1355843. The next prime is 1355857. The reversal of 1355856 is 6585531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1956 + ... + 2556.

2^1355856 is an apocalyptic number.

1355856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791552).

1355856 is an abundant number, since it is smaller than the sum of its proper divisors (2227248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1355856 is a wasteful number, since it uses less digits than its factorization.

1355856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 653 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 1355856 is about 1164.4122981144. The cubic root of 1355856 is about 110.6805195478.

It can be divided in two parts, 1355 and 856, that added together give a triangular number (2211 = T₆₆).

The spelling of 1355856 in words is "one million, three hundred fifty-five thousand, eight hundred fifty-six".