20483569 has 2 divisors, whose sum is σ = 20483570. Its totient is φ = 20483568.

The previous prime is 20483563. The next prime is 20483579. The reversal of 20483569 is 96538402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18173169 + 2310400 = 4263^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 20483569 - 2⁵ = 20483537 is a prime.

It is a super-2 number, since 2×20483569² = 839153197955522, which contains 22 as substring.

It is equal to p_1299268 and since 20483569 and 1299268 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20483563) 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, 10241784 + 10241785.

It is an arithmetic number, because the mean of its divisors is an integer number (10241785).

Almost surely, 2^20483569 is an apocalyptic number.

It is an amenable number.

20483569 is a deficient number, since it is larger than the sum of its proper divisors (1).

20483569 is an equidigital number, since it uses as much as digits as its factorization.

20483569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 20483569 is about 4525.8777049319. The cubic root of 20483569 is about 273.6120435247.

The spelling of 20483569 in words is "twenty million, four hundred eighty-three thousand, five hundred sixty-nine".