1355224 has 32 divisors (see below), whose sum is σ = 2787120. Its totient is φ = 614016.

The previous prime is 1355219. The next prime is 1355243. The reversal of 1355224 is 4225531.

It is a super-3 number, since 3×1355224³ = 7467143663330038272, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1355195 and 1355204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8554 + ... + 8710.

2^1355224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393560).

1355224 is an abundant number, since it is smaller than the sum of its proper divisors (1431896).

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

1355224 is a wasteful number, since it uses less digits than its factorization.

1355224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 255 counting only the distinct ones).

The product of its digits is 1200, while the sum is 22.

The square root of 1355224 is about 1164.1408849448. The cubic root of 1355224 is about 110.6633198452.

The spelling of 1355224 in words is "one million, three hundred fifty-five thousand, two hundred twenty-four".