20483579 has 2 divisors, whose sum is σ = 20483580. Its totient is φ = 20483578.

The previous prime is 20483569. The next prime is 20483597. The reversal of 20483579 is 97538402.

Together with next prime (20483597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20483579 - 2⁴ = 20483563 is a prime.

It is a Chen prime.

It is equal to p_1299269 and since 20483579 and 1299269 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 (20483569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10241789 + 10241790.

It is an arithmetic number, because the mean of its divisors is an integer number (10241790).

Almost surely, 2^20483579 is an apocalyptic number.

20483579 is a deficient number, since it is larger than the sum of its proper divisors (1).

20483579 is an equidigital number, since it uses as much as digits as its factorization.

20483579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 20483579 is about 4525.8788096899. The cubic root of 20483579 is about 273.6120880502.

The spelling of 20483579 in words is "twenty million, four hundred eighty-three thousand, five hundred seventy-nine".