255652191 has 6 divisors (see below), whose sum is σ = 369275400. Its totient is φ = 170434788.

The previous prime is 255652181. The next prime is 255652207. The reversal of 255652191 is 191256552.

255652191 is a `hidden beast` number, since 2 + 5 + 565 + 2 + 1 + 91 = 666.

It is not a de Polignac number, because 255652191 - 2⁹ = 255651679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255652181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14202891 + ... + 14202908.

It is an arithmetic number, because the mean of its divisors is an integer number (61545900).

Almost surely, 2^255652191 is an apocalyptic number.

255652191 is a deficient number, since it is larger than the sum of its proper divisors (113623209).

255652191 is a wasteful number, since it uses less digits than its factorization.

255652191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28405805 (or 28405802 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 255652191 is about 15989.1272744950. The cubic root of 255652191 is about 634.6727319331.

The spelling of 255652191 in words is "two hundred fifty-five million, six hundred fifty-two thousand, one hundred ninety-one".