20560213 has 2 divisors, whose sum is σ = 20560214. Its totient is φ = 20560212.

The previous prime is 20560207. The next prime is 20560247. The reversal of 20560213 is 31206502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15816529 + 4743684 = 3977^2 + 2178^2 .

It is a cyclic number.

It is not a de Polignac number, because 20560213 - 2⁵ = 20560181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20560273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10280106 + 10280107.

It is an arithmetic number, because the mean of its divisors is an integer number (10280107).

Almost surely, 2^20560213 is an apocalyptic number.

It is an amenable number.

20560213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20560213 is an equidigital number, since it uses as much as digits as its factorization.

20560213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20560213 is about 4534.3371070091. The cubic root of 20560213 is about 273.9528796375.

Adding to 20560213 its reverse (31206502), we get a palindrome (51766715).

The spelling of 20560213 in words is "twenty million, five hundred sixty thousand, two hundred thirteen".