255875921 has 8 divisors (see below), whose sum is σ = 292542720. Its totient is φ = 219237408.

The previous prime is 255875887. The next prime is 255875923. The reversal of 255875921 is 129578552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255875921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255875923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18485 + ... + 29213.

It is an arithmetic number, because the mean of its divisors is an integer number (36567840).

Almost surely, 2^255875921 is an apocalyptic number.

It is an amenable number.

255875921 is a deficient number, since it is larger than the sum of its proper divisors (36666799).

255875921 is a wasteful number, since it uses less digits than its factorization.

255875921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14143.

The product of its digits is 252000, while the sum is 44.

The square root of 255875921 is about 15996.1220612997. The cubic root of 255875921 is about 634.8578192429.

The spelling of 255875921 in words is "two hundred fifty-five million, eight hundred seventy-five thousand, nine hundred twenty-one".