20220173 has 2 divisors, whose sum is σ = 20220174. Its totient is φ = 20220172.

The previous prime is 20220149. The next prime is 20220217. The reversal of 20220173 is 37102202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20187049 + 33124 = 4493^2 + 182^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220173 - 2¹⁰ = 20219149 is a prime.

It is a super-2 number, since 2×20220173² = 817710792299858, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110086 + 10110087.

It is an arithmetic number, because the mean of its divisors is an integer number (10110087).

Almost surely, 2^20220173 is an apocalyptic number.

It is an amenable number.

20220173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220173 is an equidigital number, since it uses as much as digits as its factorization.

20220173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20220173 is about 4496.6846676190. The cubic root of 20220173 is about 272.4341978423.

Adding to 20220173 its reverse (37102202), we get a palindrome (57322375).

The spelling of 20220173 in words is "twenty million, two hundred twenty thousand, one hundred seventy-three".