2655518281 has 4 divisors (see below), whose sum is σ = 2859788932. Its totient is φ = 2451247632.

The previous prime is 2655518279. The next prime is 2655518297. The reversal of 2655518281 is 1828155562.

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 926289225 + 1729229056 = 30435^2 + 41584^2 .

It is a cyclic number.

It is not a de Polignac number, because 2655518281 - 2¹ = 2655518279 is a prime.

It is a super-2 number, since 2×2655518281² = 14103554681450389922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2655518581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102135306 + ... + 102135331.

It is an arithmetic number, because the mean of its divisors is an integer number (714947233).

Almost surely, 2^2655518281 is an apocalyptic number.

It is an amenable number.

2655518281 is a deficient number, since it is larger than the sum of its proper divisors (204270651).

2655518281 is a wasteful number, since it uses less digits than its factorization.

2655518281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204270650.

The product of its digits is 192000, while the sum is 43.

The square root of 2655518281 is about 51531.7211142807. The cubic root of 2655518281 is about 1384.7873847232.

The spelling of 2655518281 in words is "two billion, six hundred fifty-five million, five hundred eighteen thousand, two hundred eighty-one".