2155272613 has 16 divisors (see below), whose sum is σ = 2441166336. Its totient is φ = 1888960320.

The previous prime is 2155272589. The next prime is 2155272667. The reversal of 2155272613 is 3162725512.

It is a de Polignac number, because none of the positive numbers 2^k-2155272613 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 (2155272913) 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, 29095 + ... + 71812.

It is an arithmetic number, because the mean of its divisors is an integer number (152572896).

Almost surely, 2^2155272613 is an apocalyptic number.

It is an amenable number.

2155272613 is a deficient number, since it is larger than the sum of its proper divisors (285893723).

2155272613 is a wasteful number, since it uses less digits than its factorization.

2155272613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101004.

The product of its digits is 25200, while the sum is 34.

The square root of 2155272613 is about 46424.9137102052. The cubic root of 2155272613 is about 1291.7170838528.

The spelling of 2155272613 in words is "two billion, one hundred fifty-five million, two hundred seventy-two thousand, six hundred thirteen".