2261655771 has 8 divisors (see below), whose sum is σ = 3019271760. Its totient is φ = 1505905152.

The previous prime is 2261655763. The next prime is 2261655811. The reversal of 2261655771 is 1775561622.

It is a happy number.

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

It is not a de Polignac number, because 2261655771 - 2³ = 2261655763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2261655701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463510 + ... + 468363.

It is an arithmetic number, because the mean of its divisors is an integer number (377408970).

Almost surely, 2^2261655771 is an apocalyptic number.

2261655771 is a deficient number, since it is larger than the sum of its proper divisors (757615989).

2261655771 is an equidigital number, since it uses as much as digits as its factorization.

2261655771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932685.

The product of its digits is 176400, while the sum is 42.

The square root of 2261655771 is about 47556.8688098786. The cubic root of 2261655771 is about 1312.6295241608.

It can be divided in two parts, 22616 and 55771, that added together give a palindrome (78387).

The spelling of 2261655771 in words is "two billion, two hundred sixty-one million, six hundred fifty-five thousand, seven hundred seventy-one".