2153444 has 24 divisors (see below), whose sum is σ = 3991680. Its totient is φ = 1014464.

The previous prime is 2153429. The next prime is 2153449. The reversal of 2153444 is 4443512.

2153444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2153444² = 9274642122272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153449) 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, 8057 + ... + 8319.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2^2153444 is an apocalyptic number.

It is an amenable number.

2153444 is a deficient number, since it is larger than the sum of its proper divisors (1838236).

2153444 is a wasteful number, since it uses less digits than its factorization.

2153444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 377 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 2153444 is about 1467.4617541865. The cubic root of 2153444 is about 129.1351666972.

Adding to 2153444 its reverse (4443512), we get a palindrome (6596956).

The spelling of 2153444 in words is "two million, one hundred fifty-three thousand, four hundred forty-four".