21548483 has 8 divisors (see below), whose sum is σ = 23563776. Its totient is φ = 19542600.

The previous prime is 21548399. The next prime is 21548491. The reversal of 21548483 is 38484512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21548483 - 2⁸ = 21548227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21548383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2978 + ... + 7208.

It is an arithmetic number, because the mean of its divisors is an integer number (2945472).

Almost surely, 2^21548483 is an apocalyptic number.

21548483 is a deficient number, since it is larger than the sum of its proper divisors (2015293).

21548483 is a wasteful number, since it uses less digits than its factorization.

21548483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4705.

The product of its digits is 30720, while the sum is 35.

The square root of 21548483 is about 4642.0343600624. The cubic root of 21548483 is about 278.2737456752.

The spelling of 21548483 in words is "twenty-one million, five hundred forty-eight thousand, four hundred eighty-three".