1105155217 has 2 divisors, whose sum is σ = 1105155218. Its totient is φ = 1105155216.

The previous prime is 1105155203. The next prime is 1105155263. The reversal of 1105155217 is 7125515011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1043548416 + 61606801 = 32304^2 + 7849^2 .

It is an emirp because it is prime and its reverse (7125515011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1105155217 - 2⁷ = 1105155089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105155517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552577608 + 552577609.

It is an arithmetic number, because the mean of its divisors is an integer number (552577609).

Almost surely, 2^1105155217 is an apocalyptic number.

It is an amenable number.

1105155217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105155217 is an equidigital number, since it uses as much as digits as its factorization.

1105155217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 28.

The square root of 1105155217 is about 33243.8748794421. The cubic root of 1105155217 is about 1033.8902173351.

The spelling of 1105155217 in words is "one billion, one hundred five million, one hundred fifty-five thousand, two hundred seventeen".