20546959 has 2 divisors, whose sum is σ = 20546960. Its totient is φ = 20546958.

The previous prime is 20546947. The next prime is 20546963. The reversal of 20546959 is 95964502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20546959 - 2¹⁵ = 20514191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20546909) 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, 10273479 + 10273480.

It is an arithmetic number, because the mean of its divisors is an integer number (10273480).

Almost surely, 2^20546959 is an apocalyptic number.

20546959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20546959 is an equidigital number, since it uses as much as digits as its factorization.

20546959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 20546959 is about 4532.8753567686. The cubic root of 20546959 is about 273.8939997032.

The spelling of 20546959 in words is "twenty million, five hundred forty-six thousand, nine hundred fifty-nine".