20801059 has 2 divisors, whose sum is σ = 20801060. Its totient is φ = 20801058.

The previous prime is 20801057. The next prime is 20801071. The reversal of 20801059 is 95010802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20801059 - 2¹ = 20801057 is a prime.

Together with 20801057, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20801057) 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, 10400529 + 10400530.

It is an arithmetic number, because the mean of its divisors is an integer number (10400530).

Almost surely, 2^20801059 is an apocalyptic number.

20801059 is a deficient number, since it is larger than the sum of its proper divisors (1).

20801059 is an equidigital number, since it uses as much as digits as its factorization.

20801059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 20801059 is about 4560.8177994741. The cubic root of 20801059 is about 275.0184406367.

The spelling of 20801059 in words is "twenty million, eight hundred one thousand, fifty-nine".