256589141 has 2 divisors, whose sum is σ = 256589142. Its totient is φ = 256589140.

The previous prime is 256589131. The next prime is 256589159. The reversal of 256589141 is 141985652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253733041 + 2856100 = 15929^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 256589141 - 2¹⁸ = 256326997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256589131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128294570 + 128294571.

It is an arithmetic number, because the mean of its divisors is an integer number (128294571).

Almost surely, 2^256589141 is an apocalyptic number.

It is an amenable number.

256589141 is a deficient number, since it is larger than the sum of its proper divisors (1).

256589141 is an equidigital number, since it uses as much as digits as its factorization.

256589141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 41.

The square root of 256589141 is about 16018.4000761624. The cubic root of 256589141 is about 635.4471325345.

The spelling of 256589141 in words is "two hundred fifty-six million, five hundred eighty-nine thousand, one hundred forty-one".