256294361 has 2 divisors, whose sum is σ = 256294362. Its totient is φ = 256294360.

The previous prime is 256294349. The next prime is 256294369. The reversal of 256294361 is 163492652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181575625 + 74718736 = 13475^2 + 8644^2 .

It is a cyclic number.

It is not a de Polignac number, because 256294361 - 2²⁶ = 189185497 is a prime.

It is not a weakly prime, because it can be changed into another prime (256294369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128147180 + 128147181.

It is an arithmetic number, because the mean of its divisors is an integer number (128147181).

Almost surely, 2^256294361 is an apocalyptic number.

It is an amenable number.

256294361 is a deficient number, since it is larger than the sum of its proper divisors (1).

256294361 is an equidigital number, since it uses as much as digits as its factorization.

256294361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The square root of 256294361 is about 16009.1961384699. The cubic root of 256294361 is about 635.2036968182.

The spelling of 256294361 in words is "two hundred fifty-six million, two hundred ninety-four thousand, three hundred sixty-one".