20896171 has 2 divisors, whose sum is σ = 20896172. Its totient is φ = 20896170.

The previous prime is 20896093. The next prime is 20896243. The reversal of 20896171 is 17169802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20896171 - 2⁹ = 20895659 is a prime.

It is a super-2 number, since 2×20896171² = 873299924922482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20896471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10448085 + 10448086.

It is an arithmetic number, because the mean of its divisors is an integer number (10448086).

Almost surely, 2^20896171 is an apocalyptic number.

20896171 is a deficient number, since it is larger than the sum of its proper divisors (1).

20896171 is an equidigital number, since it uses as much as digits as its factorization.

20896171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 20896171 is about 4571.2329846552. The cubic root of 20896171 is about 275.4369736030.

The spelling of 20896171 in words is "twenty million, eight hundred ninety-six thousand, one hundred seventy-one".