256033 has 2 divisors, whose sum is σ = 256034. Its totient is φ = 256032.

The previous prime is 256031. The next prime is 256049. The reversal of 256033 is 330652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138384 + 117649 = 372^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 256033 - 2¹ = 256031 is a prime.

Together with 256031, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2⁹ + 5⁷ + 0 + 6 + 3⁵ + 3¹¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 256033.

It is not a weakly prime, because it can be changed into another prime (256031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128016 + 128017.

It is an arithmetic number, because the mean of its divisors is an integer number (128017).

2²⁵⁶⁰³³ is an apocalyptic number.

It is an amenable number.

256033 is a deficient number, since it is larger than the sum of its proper divisors (1).

256033 is an equidigital number, since it uses as much as digits as its factorization.

256033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 256033 is about 505.9970355644. The cubic root of 256033 is about 63.4987703071.

Adding to 256033 its reverse (330652), we get a palindrome (586685).

The spelling of 256033 in words is "two hundred fifty-six thousand, thirty-three".