20576471 has 2 divisors, whose sum is σ = 20576472. Its totient is φ = 20576470.

The previous prime is 20576407. The next prime is 20576473. The reversal of 20576471 is 17467502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20576471 - 2⁶ = 20576407 is a prime.

It is a super-3 number, since 3×20576471³ (a number of 23 digits) contains 333 as substring.

Together with 20576473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20576473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10288235 + 10288236.

It is an arithmetic number, because the mean of its divisors is an integer number (10288236).

Almost surely, 2^20576471 is an apocalyptic number.

20576471 is a deficient number, since it is larger than the sum of its proper divisors (1).

20576471 is an equidigital number, since it uses as much as digits as its factorization.

20576471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 20576471 is about 4536.1295175513. The cubic root of 20576471 is about 274.0250700772.

The spelling of 20576471 in words is "twenty million, five hundred seventy-six thousand, four hundred seventy-one".