21483169 has 2 divisors, whose sum is σ = 21483170. Its totient is φ = 21483168.

The previous prime is 21483157. The next prime is 21483191. The reversal of 21483169 is 96138412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13417569 + 8065600 = 3663^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 21483169 - 2¹³ = 21474977 is a prime.

It is a super-2 number, since 2×21483169² = 923053100565122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21483149) by changing a digit.

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 as a sum of consecutive naturals, namely, 10741584 + 10741585.

It is an arithmetic number, because the mean of its divisors is an integer number (10741585).

Almost surely, 2^21483169 is an apocalyptic number.

It is an amenable number.

21483169 is a deficient number, since it is larger than the sum of its proper divisors (1).

21483169 is an equidigital number, since it uses as much as digits as its factorization.

21483169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 21483169 is about 4634.9939590036. The cubic root of 21483169 is about 277.9923095366.

The spelling of 21483169 in words is "twenty-one million, four hundred eighty-three thousand, one hundred sixty-nine".