2653655261 has 8 divisors (see below), whose sum is σ = 2663234040. Its totient is φ = 2644088832.

The previous prime is 2653655233. The next prime is 2653655293. The reversal of 2653655261 is 1625563562.

It can be written as a sum of positive squares in 4 ways, for example, as 736091161 + 1917564100 = 27131^2 + 43790^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2653655261 - 2¹⁴ = 2653638877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2653655201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680405 + ... + 684293.

It is an arithmetic number, because the mean of its divisors is an integer number (332904255).

Almost surely, 2^2653655261 is an apocalyptic number.

It is an amenable number.

2653655261 is a deficient number, since it is larger than the sum of its proper divisors (9578779).

2653655261 is a wasteful number, since it uses less digits than its factorization.

2653655261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6175.

The product of its digits is 324000, while the sum is 41.

The square root of 2653655261 is about 51513.6415039745. The cubic root of 2653655261 is about 1384.4634692792.

The spelling of 2653655261 in words is "two billion, six hundred fifty-three million, six hundred fifty-five thousand, two hundred sixty-one".