20161441 has 2 divisors, whose sum is σ = 20161442. Its totient is φ = 20161440.

The previous prime is 20161417. The next prime is 20161457. The reversal of 20161441 is 14416102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18190225 + 1971216 = 4265^2 + 1404^2 .

It is a cyclic number.

It is not a de Polignac number, because 20161441 - 2²³ = 11772833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20161241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080720 + 10080721.

It is an arithmetic number, because the mean of its divisors is an integer number (10080721).

Almost surely, 2^20161441 is an apocalyptic number.

It is an amenable number.

20161441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20161441 is an equidigital number, since it uses as much as digits as its factorization.

20161441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 20161441 is about 4490.1493293653. The cubic root of 20161441 is about 272.1701690714.

Adding to 20161441 its reverse (14416102), we get a palindrome (34577543).

It can be divided in two parts, 20161 and 441, that added together give a palindrome (20602).

The spelling of 20161441 in words is "twenty million, one hundred sixty-one thousand, four hundred forty-one".