21482003 has 4 divisors (see below), whose sum is σ = 21497280. Its totient is φ = 21466728.

The previous prime is 21481963. The next prime is 21482029. The reversal of 21482003 is 30028412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21482003 - 2⁶ = 21481939 is a prime.

It is a super-2 number, since 2×21482003² = 922952905784018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21482053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5288 + ... + 8421.

It is an arithmetic number, because the mean of its divisors is an integer number (5374320).

Almost surely, 2^21482003 is an apocalyptic number.

21482003 is a deficient number, since it is larger than the sum of its proper divisors (15277).

21482003 is a wasteful number, since it uses less digits than its factorization.

21482003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15276.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 21482003 is about 4634.8681750401. The cubic root of 21482003 is about 277.9872800971.

The spelling of 21482003 in words is "twenty-one million, four hundred eighty-two thousand, three".