255600197 has 4 divisors (see below), whose sum is σ = 256031820. Its totient is φ = 255168576.

The previous prime is 255600193. The next prime is 255600199. The reversal of 255600197 is 791006552.

255600197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122567041 + 133033156 = 11071^2 + 11534^2 .

It is a cyclic number.

It is not a de Polignac number, because 255600197 - 2² = 255600193 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 (255600193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214922 + ... + 216107.

It is an arithmetic number, because the mean of its divisors is an integer number (64007955).

Almost surely, 2^255600197 is an apocalyptic number.

It is an amenable number.

255600197 is a deficient number, since it is larger than the sum of its proper divisors (431623).

255600197 is an equidigital number, since it uses as much as digits as its factorization.

255600197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431622.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 255600197 is about 15987.5012744331. The cubic root of 255600197 is about 634.6297028849.

The spelling of 255600197 in words is "two hundred fifty-five million, six hundred thousand, one hundred ninety-seven".