20298571 has 2 divisors, whose sum is σ = 20298572. Its totient is φ = 20298570.

The previous prime is 20298557. The next prime is 20298601. The reversal of 20298571 is 17589202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20298571 - 2⁵ = 20298539 is a prime.

It is not a weakly prime, because it can be changed into another prime (20298541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10149285 + 10149286.

It is an arithmetic number, because the mean of its divisors is an integer number (10149286).

Almost surely, 2^20298571 is an apocalyptic number.

20298571 is a deficient number, since it is larger than the sum of its proper divisors (1).

20298571 is an equidigital number, since it uses as much as digits as its factorization.

20298571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 20298571 is about 4505.3935455185. The cubic root of 20298571 is about 272.7858392775.

The spelling of 20298571 in words is "twenty million, two hundred ninety-eight thousand, five hundred seventy-one".