256448033 has 2 divisors, whose sum is σ = 256448034. Its totient is φ = 256448032.

The previous prime is 256448021. The next prime is 256448053. The reversal of 256448033 is 330844652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223592209 + 32855824 = 14953^2 + 5732^2 .

It is a cyclic number.

It is not a de Polignac number, because 256448033 - 2⁶ = 256447969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256447984 and 256448002.

It is not a weakly prime, because it can be changed into another prime (256448053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128224016 + 128224017.

It is an arithmetic number, because the mean of its divisors is an integer number (128224017).

Almost surely, 2^256448033 is an apocalyptic number.

It is an amenable number.

256448033 is a deficient number, since it is larger than the sum of its proper divisors (1).

256448033 is an equidigital number, since it uses as much as digits as its factorization.

256448033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 256448033 is about 16013.9949107023. The cubic root of 256448033 is about 635.3306257646.

The spelling of 256448033 in words is "two hundred fifty-six million, four hundred forty-eight thousand, thirty-three".