256093 has 2 divisors, whose sum is σ = 256094. Its totient is φ = 256092.

The previous prime is 256079. The next prime is 256117. The reversal of 256093 is 390652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139129 + 116964 = 373^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 256093 - 2¹³ = 247901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256033) 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 as a sum of consecutive naturals, namely, 128046 + 128047.

It is an arithmetic number, because the mean of its divisors is an integer number (128047).

2²⁵⁶⁰⁹³ is an apocalyptic number.

It is an amenable number.

256093 is a deficient number, since it is larger than the sum of its proper divisors (1).

256093 is an equidigital number, since it uses as much as digits as its factorization.

256093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 256093 is about 506.0563209762. The cubic root of 256093 is about 63.5037301217.

The spelling of 256093 in words is "two hundred fifty-six thousand, ninety-three".