20559067 has 2 divisors, whose sum is σ = 20559068. Its totient is φ = 20559066.

The previous prime is 20559061. The next prime is 20559113. The reversal of 20559067 is 76095502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20559067 is a prime.

It is not a weakly prime, because it can be changed into another prime (20559061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10279533 + 10279534.

It is an arithmetic number, because the mean of its divisors is an integer number (10279534).

Almost surely, 2^20559067 is an apocalyptic number.

20559067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20559067 is an equidigital number, since it uses as much as digits as its factorization.

20559067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 20559067 is about 4534.2107361701. The cubic root of 20559067 is about 273.9477896151.

The spelling of 20559067 in words is "twenty million, five hundred fifty-nine thousand, sixty-seven".