20322061 has 2 divisors, whose sum is σ = 20322062. Its totient is φ = 20322060.

The previous prime is 20322053. The next prime is 20322073. The reversal of 20322061 is 16022302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20196036 + 126025 = 4494^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 20322061 - 2³ = 20322053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20322661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161030 + 10161031.

It is an arithmetic number, because the mean of its divisors is an integer number (10161031).

Almost surely, 2^20322061 is an apocalyptic number.

It is an amenable number.

20322061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322061 is an equidigital number, since it uses as much as digits as its factorization.

20322061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20322061 is about 4507.9996672582. Note that the first 3 decimals coincide. The cubic root of 20322061 is about 272.8910235164.

Adding to 20322061 its reverse (16022302), we get a palindrome (36344363).

The spelling of 20322061 in words is "twenty million, three hundred twenty-two thousand, sixty-one".