1550224 has 40 divisors (see below), whose sum is σ = 3359160. Its totient is φ = 688128.

The previous prime is 1550221. The next prime is 1550231. The reversal of 1550224 is 4220551.

It can be written as a sum of positive squares in 4 ways, for example, as 409600 + 1140624 = 640^2 + 1068^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550221) by changing a digit.

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, 5904 + ... + 6160.

It is an arithmetic number, because the mean of its divisors is an integer number (83979).

2^1550224 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 1550224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1679580).

1550224 is an abundant number, since it is smaller than the sum of its proper divisors (1808936).

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

1550224 is a wasteful number, since it uses less digits than its factorization.

1550224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1550224 is about 1245.0799171138. The cubic root of 1550224 is about 115.7350273819.

Adding to 1550224 its reverse (4220551), we get a palindrome (5770775).

The spelling of 1550224 in words is "one million, five hundred fifty thousand, two hundred twenty-four".