20541371 has 2 divisors, whose sum is σ = 20541372. Its totient is φ = 20541370.

The previous prime is 20541349. The next prime is 20541373. The reversal of 20541371 is 17314502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20541371 - 2⁶ = 20541307 is a prime.

Together with 20541373, 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 (20541373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270685 + 10270686.

It is an arithmetic number, because the mean of its divisors is an integer number (10270686).

Almost surely, 2^20541371 is an apocalyptic number.

20541371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541371 is an equidigital number, since it uses as much as digits as its factorization.

20541371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20541371 is about 4532.2589290551. The cubic root of 20541371 is about 273.8691678300.

Adding to 20541371 its reverse (17314502), we get a palindrome (37855873).

The spelling of 20541371 in words is "twenty million, five hundred forty-one thousand, three hundred seventy-one".