21483045 has 24 divisors (see below), whose sum is σ = 37440000. Its totient is φ = 11395296.

The previous prime is 21483037. The next prime is 21483103. The reversal of 21483045 is 54038412.

It is not a de Polignac number, because 21483045 - 2³ = 21483037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7756 + ... + 10154.

It is an arithmetic number, because the mean of its divisors is an integer number (1560000).

Almost surely, 2^21483045 is an apocalyptic number.

It is an amenable number.

21483045 is a deficient number, since it is larger than the sum of its proper divisors (15956955).

21483045 is a wasteful number, since it uses less digits than its factorization.

21483045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609 (or 2606 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 21483045 is about 4634.9805824836. The cubic root of 21483045 is about 277.9917746820.

The spelling of 21483045 in words is "twenty-one million, four hundred eighty-three thousand, forty-five".