20590571 has 2 divisors, whose sum is σ = 20590572. Its totient is φ = 20590570.

The previous prime is 20590561. The next prime is 20590573. The reversal of 20590571 is 17509502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20590571 - 2²² = 16396267 is a prime.

It is a super-2 number, since 2×20590571² = 847943228212082, which contains 22 as substring.

Together with 20590573, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20590573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10295285 + 10295286.

It is an arithmetic number, because the mean of its divisors is an integer number (10295286).

Almost surely, 2^20590571 is an apocalyptic number.

20590571 is a deficient number, since it is larger than the sum of its proper divisors (1).

20590571 is an equidigital number, since it uses as much as digits as its factorization.

20590571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 20590571 is about 4537.6834398182. The cubic root of 20590571 is about 274.0876475600.

The spelling of 20590571 in words is "twenty million, five hundred ninety thousand, five hundred seventy-one".