255328403 has 8 divisors (see below), whose sum is σ = 293200320. Its totient is φ = 219899880.

The previous prime is 255328399. The next prime is 255328417. The reversal of 255328403 is 304823552.

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

It is a cyclic number.

It is not a de Polignac number, because 255328403 - 2² = 255328399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255328403.

It is not an unprimeable number, because it can be changed into a prime (255328433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610625 + ... + 611042.

It is an arithmetic number, because the mean of its divisors is an integer number (36650040).

Almost surely, 2^255328403 is an apocalyptic number.

255328403 is a deficient number, since it is larger than the sum of its proper divisors (37871917).

255328403 is a wasteful number, since it uses less digits than its factorization.

255328403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221697.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 255328403 is about 15978.9988109393. The cubic root of 255328403 is about 634.4046773404.

The spelling of 255328403 in words is "two hundred fifty-five million, three hundred twenty-eight thousand, four hundred three".