20055173 has 2 divisors, whose sum is σ = 20055174. Its totient is φ = 20055172.

The previous prime is 20055143. The next prime is 20055179. The reversal of 20055173 is 37155002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15737089 + 4318084 = 3967^2 + 2078^2 .

It is a cyclic number.

It is not a de Polignac number, because 20055173 - 2¹⁰ = 20054149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20055179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027586 + 10027587.

It is an arithmetic number, because the mean of its divisors is an integer number (10027587).

Almost surely, 2^20055173 is an apocalyptic number.

It is an amenable number.

20055173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20055173 is an equidigital number, since it uses as much as digits as its factorization.

20055173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 20055173 is about 4478.3002355805. The cubic root of 20055173 is about 271.6911367589.

The spelling of 20055173 in words is "twenty million, fifty-five thousand, one hundred seventy-three".