2181152 has 12 divisors (see below), whose sum is σ = 4294206. Its totient is φ = 1090560.

The previous prime is 2181149. The next prime is 2181161. The reversal of 2181152 is 2511812.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1547536 + 633616 = 1244^2 + 796^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34049 + ... + 34112.

2^2181152 is an apocalyptic number.

It is an amenable number.

2181152 is a deficient number, since it is larger than the sum of its proper divisors (2113054).

2181152 is an equidigital number, since it uses as much as digits as its factorization.

2181152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68171 (or 68163 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

The square root of 2181152 is about 1476.8723709244. The cubic root of 2181152 is about 129.6866615420.

Adding to 2181152 its reverse (2511812), we get a palindrome (4692964).

The spelling of 2181152 in words is "two million, one hundred eighty-one thousand, one hundred fifty-two".