2255097661 has 2 divisors, whose sum is σ = 2255097662. Its totient is φ = 2255097660.

The previous prime is 2255097589. The next prime is 2255097683. The reversal of 2255097661 is 1667905522.

2255097661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2221236900 + 33860761 = 47130^2 + 5819^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255097661 - 2²¹ = 2253000509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2255097161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127548830 + 1127548831.

It is an arithmetic number, because the mean of its divisors is an integer number (1127548831).

Almost surely, 2^2255097661 is an apocalyptic number.

It is an amenable number.

2255097661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2255097661 is an equidigital number, since it uses as much as digits as its factorization.

2255097661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 2255097661 is about 47487.8685666139. The cubic root of 2255097661 is about 1311.3595544783.

The spelling of 2255097661 in words is "two billion, two hundred fifty-five million, ninety-seven thousand, six hundred sixty-one".