2555665597 has 2 divisors, whose sum is σ = 2555665598. Its totient is φ = 2555665596.

The previous prime is 2555665583. The next prime is 2555665603. The reversal of 2555665597 is 7955665552.

It is a happy number.

2555665597 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., 1959036121 + 596629476 = 44261^2 + 24426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2555665597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555665897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277832798 + 1277832799.

It is an arithmetic number, because the mean of its divisors is an integer number (1277832799).

Almost surely, 2^2555665597 is an apocalyptic number.

It is an amenable number.

2555665597 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555665597 is an equidigital number, since it uses as much as digits as its factorization.

2555665597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14175000, while the sum is 55.

The square root of 2555665597 is about 50553.5913363235. The cubic root of 2555665597 is about 1367.2082665281.

The spelling of 2555665597 in words is "two billion, five hundred fifty-five million, six hundred sixty-five thousand, five hundred ninety-seven".