256424461 has 2 divisors, whose sum is σ = 256424462. Its totient is φ = 256424460.

The previous prime is 256424449. The next prime is 256424471. The reversal of 256424461 is 164424652.

256424461 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., 153908836 + 102515625 = 12406^2 + 10125^2 .

It is a cyclic number.

It is not a de Polignac number, because 256424461 - 2⁵ = 256424429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256424431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128212230 + 128212231.

It is an arithmetic number, because the mean of its divisors is an integer number (128212231).

Almost surely, 2^256424461 is an apocalyptic number.

It is an amenable number.

256424461 is a deficient number, since it is larger than the sum of its proper divisors (1).

256424461 is an equidigital number, since it uses as much as digits as its factorization.

256424461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 34.

The square root of 256424461 is about 16013.2589125387. The cubic root of 256424461 is about 635.3111592185.

It can be divided in two parts, 25642 and 4461, that added together give a palindrome (30103).

The spelling of 256424461 in words is "two hundred fifty-six million, four hundred twenty-four thousand, four hundred sixty-one".