20516341 has 2 divisors, whose sum is σ = 20516342. Its totient is φ = 20516340.

The previous prime is 20516323. The next prime is 20516351. The reversal of 20516341 is 14361502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17724100 + 2792241 = 4210^2 + 1671^2 .

It is a cyclic number.

It is not a de Polignac number, because 20516341 - 2⁷ = 20516213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20516351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10258170 + 10258171.

It is an arithmetic number, because the mean of its divisors is an integer number (10258171).

Almost surely, 2^20516341 is an apocalyptic number.

It is an amenable number.

20516341 is a deficient number, since it is larger than the sum of its proper divisors (1).

20516341 is an equidigital number, since it uses as much as digits as its factorization.

20516341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20516341 is about 4529.4967711656. The cubic root of 20516341 is about 273.7578845821.

Adding to 20516341 its reverse (14361502), we get a palindrome (34877843).

The spelling of 20516341 in words is "twenty million, five hundred sixteen thousand, three hundred forty-one".