21548852 has 36 divisors (see below), whose sum is σ = 41319936. Its totient is φ = 9828000.

The previous prime is 21548851. The next prime is 21548873. The reversal of 21548852 is 25884512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21548851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85727 + ... + 85977.

It is an arithmetic number, because the mean of its divisors is an integer number (1147776).

Almost surely, 2^21548852 is an apocalyptic number.

It is an amenable number.

21548852 is a deficient number, since it is larger than the sum of its proper divisors (19771084).

21548852 is a wasteful number, since it uses less digits than its factorization.

21548852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 393 counting only the distinct ones).

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

The square root of 21548852 is about 4642.0741053973. The cubic root of 21548852 is about 278.2753340689.

The spelling of 21548852 in words is "twenty-one million, five hundred forty-eight thousand, eight hundred fifty-two".