21484163 has 2 divisors, whose sum is σ = 21484164. Its totient is φ = 21484162.

The previous prime is 21484121. The next prime is 21484187. The reversal of 21484163 is 36148412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21484163 - 2⁸ = 21483907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21484063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10742081 + 10742082.

It is an arithmetic number, because the mean of its divisors is an integer number (10742082).

Almost surely, 2^21484163 is an apocalyptic number.

21484163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21484163 is an equidigital number, since it uses as much as digits as its factorization.

21484163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 21484163 is about 4635.1011855190. The cubic root of 21484163 is about 277.9965969254.

The spelling of 21484163 in words is "twenty-one million, four hundred eighty-four thousand, one hundred sixty-three".