255253857 has 8 divisors (see below), whose sum is σ = 340524576. Its totient is φ = 170076192.

The previous prime is 255253807. The next prime is 255253903. The reversal of 255253857 is 758352552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255253857 - 2⁸ = 255253601 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (255253807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16588 + ... + 28029.

It is an arithmetic number, because the mean of its divisors is an integer number (42565572).

Almost surely, 2^255253857 is an apocalyptic number.

It is an amenable number.

255253857 is a deficient number, since it is larger than the sum of its proper divisors (85270719).

255253857 is a wasteful number, since it uses less digits than its factorization.

255253857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46527.

The product of its digits is 420000, while the sum is 42.

The square root of 255253857 is about 15976.6660164128. Note that the first 3 decimals coincide. The cubic root of 255253857 is about 634.3429308030.

The spelling of 255253857 in words is "two hundred fifty-five million, two hundred fifty-three thousand, eight hundred fifty-seven".