256122271 has 2 divisors, whose sum is σ = 256122272. Its totient is φ = 256122270.

The previous prime is 256122259. The next prime is 256122283. The reversal of 256122271 is 172221652.

It is a balanced prime because it is at equal distance from previous prime (256122259) and next prime (256122283).

It is a cyclic number.

It is not a de Polignac number, because 256122271 - 2¹⁹ = 255597983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256122211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128061135 + 128061136.

It is an arithmetic number, because the mean of its divisors is an integer number (128061136).

Almost surely, 2^256122271 is an apocalyptic number.

256122271 is a deficient number, since it is larger than the sum of its proper divisors (1).

256122271 is an equidigital number, since it uses as much as digits as its factorization.

256122271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 256122271 is about 16003.8205126151. The cubic root of 256122271 is about 635.0614948608.

The spelling of 256122271 in words is "two hundred fifty-six million, one hundred twenty-two thousand, two hundred seventy-one".