20560273 has 2 divisors, whose sum is σ = 20560274. Its totient is φ = 20560272.

The previous prime is 20560247. The next prime is 20560279. The reversal of 20560273 is 37206502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15233409 + 5326864 = 3903^2 + 2308^2 .

It is a cyclic number.

It is not a de Polignac number, because 20560273 - 2²¹ = 18463121 is a prime.

It is not a weakly prime, because it can be changed into another prime (20560279) 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, 10280136 + 10280137.

It is an arithmetic number, because the mean of its divisors is an integer number (10280137).

Almost surely, 2^20560273 is an apocalyptic number.

It is an amenable number.

20560273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20560273 is an equidigital number, since it uses as much as digits as its factorization.

20560273 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 20560273 is about 4534.3437231864. The cubic root of 20560273 is about 273.9531461256.

Adding to 20560273 its reverse (37206502), we get a palindrome (57766775).

The spelling of 20560273 in words is "twenty million, five hundred sixty thousand, two hundred seventy-three".