2154224 has 10 divisors (see below), whose sum is σ = 4173840. Its totient is φ = 1077104.

The previous prime is 2154209. The next prime is 2154227. The reversal of 2154224 is 4224512.

It is a happy number.

2154224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2154196 and 2154205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154227) 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 as a sum of consecutive naturals, namely, 67304 + ... + 67335.

It is an arithmetic number, because the mean of its divisors is an integer number (417384).

2^2154224 is an apocalyptic number.

It is an amenable number.

2154224 is a deficient number, since it is larger than the sum of its proper divisors (2019616).

2154224 is a wasteful number, since it uses less digits than its factorization.

2154224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134647 (or 134641 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 2154224 is about 1467.7274951434. The cubic root of 2154224 is about 129.1507561857.

Adding to 2154224 its reverse (4224512), we get a palindrome (6378736).

It can be divided in two parts, 21 and 54224, that added together give a palindrome (54245).

The spelling of 2154224 in words is "two million, one hundred fifty-four thousand, two hundred twenty-four".