20541373 has 2 divisors, whose sum is σ = 20541374. Its totient is φ = 20541372.

The previous prime is 20541371. The next prime is 20541379. The reversal of 20541373 is 37314502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16957924 + 3583449 = 4118^2 + 1893^2 .

It is a cyclic number.

It is not a de Polignac number, because 20541373 - 2¹ = 20541371 is a prime.

Together with 20541371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20541371) 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, 10270686 + 10270687.

It is an arithmetic number, because the mean of its divisors is an integer number (10270687).

Almost surely, 2^20541373 is an apocalyptic number.

It is an amenable number.

20541373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541373 is an equidigital number, since it uses as much as digits as its factorization.

20541373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20541373 is about 4532.2591496957. The cubic root of 20541373 is about 273.8691767184.

Adding to 20541373 its reverse (37314502), we get a palindrome (57855875).

The spelling of 20541373 in words is "twenty million, five hundred forty-one thousand, three hundred seventy-three".