256503841 has 8 divisors (see below), whose sum is σ = 284410368. Its totient is φ = 229362000.

The previous prime is 256503833. The next prime is 256503881. The reversal of 256503841 is 148305652.

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 256503841 - 2³ = 256503833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256503797 and 256503806.

It is not an unprimeable number, because it can be changed into a prime (256503881) 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, 190465 + ... + 191806.

It is an arithmetic number, because the mean of its divisors is an integer number (35551296).

Almost surely, 2^256503841 is an apocalyptic number.

It is an amenable number.

256503841 is a deficient number, since it is larger than the sum of its proper divisors (27906527).

256503841 is a wasteful number, since it uses less digits than its factorization.

256503841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382343.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 256503841 is about 16015.7372918015. The cubic root of 256503841 is about 635.3767091231.

The spelling of 256503841 in words is "two hundred fifty-six million, five hundred three thousand, eight hundred forty-one".