20959073 has 2 divisors, whose sum is σ = 20959074. Its totient is φ = 20959072.

The previous prime is 20959021. The next prime is 20959087. The reversal of 20959073 is 37095902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13712209 + 7246864 = 3703^2 + 2692^2 .

It is a cyclic number.

It is not a de Polignac number, because 20959073 - 2²⁰ = 19910497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20959273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10479536 + 10479537.

It is an arithmetic number, because the mean of its divisors is an integer number (10479537).

Almost surely, 2^20959073 is an apocalyptic number.

It is an amenable number.

20959073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20959073 is an equidigital number, since it uses as much as digits as its factorization.

20959073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 20959073 is about 4578.1080153269. The cubic root of 20959073 is about 275.7130717294.

The spelling of 20959073 in words is "twenty million, nine hundred fifty-nine thousand, seventy-three".