2255587661 has 8 divisors (see below), whose sum is σ = 2309102400. Its totient is φ = 2202121152.

The previous prime is 2255587639. The next prime is 2255587709. The reversal of 2255587661 is 1667855522.

2255587661 is nontrivially palindromic in base 12.

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 2255587661 - 2²² = 2251393357 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 (2255587561) 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, 93365 + ... + 115013.

It is an arithmetic number, because the mean of its divisors is an integer number (288637800).

Almost surely, 2^2255587661 is an apocalyptic number.

It is an amenable number.

2255587661 is a deficient number, since it is larger than the sum of its proper divisors (53514739).

2255587661 is a wasteful number, since it uses less digits than its factorization.

2255587661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24115.

The product of its digits is 1008000, while the sum is 47.

The square root of 2255587661 is about 47493.0274987813. The cubic root of 2255587661 is about 1311.4545274010.

The spelling of 2255587661 in words is "two billion, two hundred fifty-five million, five hundred eighty-seven thousand, six hundred sixty-one".