256049 has 2 divisors, whose sum is σ = 256050. Its totient is φ = 256048.

The previous prime is 256033. The next prime is 256057. The reversal of 256049 is 940652.

256049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255025 + 1024 = 505^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 256049 - 2⁴ = 256033 is a prime.

It is a super-2 number, since 2×256049² = 131122180802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128024 + 128025.

It is an arithmetic number, because the mean of its divisors is an integer number (128025).

256049 is a Friedman number, since it can be written as 506^2+9+4, using all its digits and the basic arithmetic operations.

2²⁵⁶⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

256049 is a deficient number, since it is larger than the sum of its proper divisors (1).

256049 is an equidigital number, since it uses as much as digits as its factorization.

256049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 256049 is about 506.0128456867. The cubic root of 256049 is about 63.5000930000.

The spelling of 256049 in words is "two hundred fifty-six thousand, forty-nine".