21450483 has 12 divisors (see below), whose sum is σ = 31304728. Its totient is φ = 14152320.

The previous prime is 21450479. The next prime is 21450493. The reversal of 21450483 is 38405412.

It is not a de Polignac number, because 21450483 - 2² = 21450479 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21450433) 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, 11413 + ... + 13158.

Almost surely, 2^21450483 is an apocalyptic number.

21450483 is a deficient number, since it is larger than the sum of its proper divisors (9854245).

21450483 is a wasteful number, since it uses less digits than its factorization.

21450483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24674 (or 24671 counting only the distinct ones).

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

The square root of 21450483 is about 4631.4666143674. The cubic root of 21450483 is about 277.8512523088.

Adding to 21450483 its reverse (38405412), we get a palindrome (59855895).

The spelling of 21450483 in words is "twenty-one million, four hundred fifty thousand, four hundred eighty-three".