20522113 has 2 divisors, whose sum is σ = 20522114. Its totient is φ = 20522112.

The previous prime is 20522083. The next prime is 20522119. The reversal of 20522113 is 31122502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16224784 + 4297329 = 4028^2 + 2073^2 .

It is a cyclic number.

It is not a de Polignac number, because 20522113 - 2¹³ = 20513921 is a prime.

It is not a weakly prime, because it can be changed into another prime (20522119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261056 + 10261057.

It is an arithmetic number, because the mean of its divisors is an integer number (10261057).

Almost surely, 2^20522113 is an apocalyptic number.

It is an amenable number.

20522113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20522113 is an equidigital number, since it uses as much as digits as its factorization.

20522113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20522113 is about 4530.1338832313. The cubic root of 20522113 is about 273.7835548896.

Adding to 20522113 its reverse (31122502), we get a palindrome (51644615).

The spelling of 20522113 in words is "twenty million, five hundred twenty-two thousand, one hundred thirteen".