20550941 has 2 divisors, whose sum is σ = 20550942. Its totient is φ = 20550940.

The previous prime is 20550917. The next prime is 20550997. The reversal of 20550941 is 14905502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10374841 + 10176100 = 3221^2 + 3190^2 .

It is a cyclic number.

It is not a de Polignac number, because 20550941 - 2¹⁸ = 20288797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20550941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20550911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10275470 + 10275471.

It is an arithmetic number, because the mean of its divisors is an integer number (10275471).

Almost surely, 2^20550941 is an apocalyptic number.

It is an amenable number.

20550941 is a deficient number, since it is larger than the sum of its proper divisors (1).

20550941 is an equidigital number, since it uses as much as digits as its factorization.

20550941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 20550941 is about 4533.3145710396. The cubic root of 20550941 is about 273.9116921098.

The spelling of 20550941 in words is "twenty million, five hundred fifty thousand, nine hundred forty-one".