255191001 has 8 divisors (see below), whose sum is σ = 366428160. Its totient is φ = 157040592.

The previous prime is 255190997. The next prime is 255191009. The reversal of 255191001 is 100191552.

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

It is not a de Polignac number, because 255191001 - 2² = 255190997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255191009) 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 7 ways as a sum of consecutive naturals, for example, 3271641 + ... + 3271718.

It is an arithmetic number, because the mean of its divisors is an integer number (45803520).

Almost surely, 2^255191001 is an apocalyptic number.

It is an amenable number.

255191001 is a deficient number, since it is larger than the sum of its proper divisors (111237159).

255191001 is a wasteful number, since it uses less digits than its factorization.

255191001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543375.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 255191001 is about 15974.6987765028. The cubic root of 255191001 is about 634.2908577635.

The spelling of 255191001 in words is "two hundred fifty-five million, one hundred ninety-one thousand, one".