21552848 has 10 divisors (see below), whose sum is σ = 41758674. Its totient is φ = 10776416.

The previous prime is 21552841. The next prime is 21552851. The reversal of 21552848 is 84825512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11235904 + 10316944 = 3352^2 + 3212^2 .

It is a super-2 number, since 2×21552848² = 929050513822208, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21552841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673511 + ... + 673542.

Almost surely, 2^21552848 is an apocalyptic number.

It is an amenable number.

21552848 is a deficient number, since it is larger than the sum of its proper divisors (20205826).

21552848 is a wasteful number, since it uses less digits than its factorization.

21552848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347061 (or 1347055 counting only the distinct ones).

The product of its digits is 25600, while the sum is 35.

The square root of 21552848 is about 4642.5044964976. The cubic root of 21552848 is about 278.2925340495.

The spelling of 21552848 in words is "twenty-one million, five hundred fifty-two thousand, eight hundred forty-eight".