2645155271 has 16 divisors (see below), whose sum is σ = 2966110368. Its totient is φ = 2337724800.

The previous prime is 2645155267. The next prime is 2645155297. The reversal of 2645155271 is 1725515462.

It is a cyclic number.

It is not a de Polignac number, because 2645155271 - 2² = 2645155267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645155231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706721 + ... + 710453.

It is an arithmetic number, because the mean of its divisors is an integer number (185381898).

Almost surely, 2^2645155271 is an apocalyptic number.

2645155271 is a deficient number, since it is larger than the sum of its proper divisors (320955097).

2645155271 is a wasteful number, since it uses less digits than its factorization.

2645155271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522.

The product of its digits is 84000, while the sum is 38.

The square root of 2645155271 is about 51431.0730103894. The cubic root of 2645155271 is about 1382.9836849057.

The spelling of 2645155271 in words is "two billion, six hundred forty-five million, one hundred fifty-five thousand, two hundred seventy-one".