20380541 has 2 divisors, whose sum is σ = 20380542. Its totient is φ = 20380540.

The previous prime is 20380537. The next prime is 20380543. The reversal of 20380541 is 14508302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13468900 + 6911641 = 3670^2 + 2629^2 .

It is a cyclic number.

It is not a de Polignac number, because 20380541 - 2² = 20380537 is a prime.

Together with 20380543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20380543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10190270 + 10190271.

It is an arithmetic number, because the mean of its divisors is an integer number (10190271).

Almost surely, 2^20380541 is an apocalyptic number.

It is an amenable number.

20380541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20380541 is an equidigital number, since it uses as much as digits as its factorization.

20380541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20380541 is about 4514.4812548066. The cubic root of 20380541 is about 273.1525354369.

Adding to 20380541 its reverse (14508302), we get a palindrome (34888843).

The spelling of 20380541 in words is "twenty million, three hundred eighty thousand, five hundred forty-one".