2220155173 has 2 divisors, whose sum is σ = 2220155174. Its totient is φ = 2220155172.

The previous prime is 2220155143. The next prime is 2220155177. The reversal of 2220155173 is 3715510222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2191831489 + 28323684 = 46817^2 + 5322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220155173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220155177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110077586 + 1110077587.

It is an arithmetic number, because the mean of its divisors is an integer number (1110077587).

Almost surely, 2^2220155173 is an apocalyptic number.

It is an amenable number.

2220155173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220155173 is an equidigital number, since it uses as much as digits as its factorization.

2220155173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 2220155173 is about 47118.5226105403. The cubic root of 2220155173 is about 1304.5511436664.

Adding to 2220155173 its reverse (3715510222), we get a palindrome (5935665395).

The spelling of 2220155173 in words is "two billion, two hundred twenty million, one hundred fifty-five thousand, one hundred seventy-three".