20941259 has 2 divisors, whose sum is σ = 20941260. Its totient is φ = 20941258.

The previous prime is 20941243. The next prime is 20941279. The reversal of 20941259 is 95214902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20941259 - 2⁴ = 20941243 is a prime.

It is not a weakly prime, because it can be changed into another prime (20941279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10470629 + 10470630.

It is an arithmetic number, because the mean of its divisors is an integer number (10470630).

Almost surely, 2^20941259 is an apocalyptic number.

20941259 is a deficient number, since it is larger than the sum of its proper divisors (1).

20941259 is an equidigital number, since it uses as much as digits as its factorization.

20941259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 20941259 is about 4576.1620382150. The cubic root of 20941259 is about 275.6349361994.

The spelling of 20941259 in words is "twenty million, nine hundred forty-one thousand, two hundred fifty-nine".