2215055165 has 4 divisors (see below), whose sum is σ = 2658066204. Its totient is φ = 1772044128.

The previous prime is 2215055159. The next prime is 2215055179. The reversal of 2215055165 is 5615505122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 863536996 + 1351518169 = 29386^2 + 36763^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215055165 - 2⁸ = 2215054909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221505512 + ... + 221505521.

It is an arithmetic number, because the mean of its divisors is an integer number (664516551).

Almost surely, 2^2215055165 is an apocalyptic number.

It is an amenable number.

2215055165 is a deficient number, since it is larger than the sum of its proper divisors (443011039).

2215055165 is an equidigital number, since it uses as much as digits as its factorization.

2215055165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443011038.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 2215055165 is about 47064.3725656680. The cubic root of 2215055165 is about 1303.5514654574.

The spelling of 2215055165 in words is "two billion, two hundred fifteen million, fifty-five thousand, one hundred sixty-five".