256034437 has 2 divisors, whose sum is σ = 256034438. Its totient is φ = 256034436.

The previous prime is 256034411. The next prime is 256034447. The reversal of 256034437 is 734430652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203747076 + 52287361 = 14274^2 + 7231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256034437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256034447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128017218 + 128017219.

It is an arithmetic number, because the mean of its divisors is an integer number (128017219).

Almost surely, 2^256034437 is an apocalyptic number.

It is an amenable number.

256034437 is a deficient number, since it is larger than the sum of its proper divisors (1).

256034437 is an equidigital number, since it uses as much as digits as its factorization.

256034437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 256034437 is about 16001.0761200614. The cubic root of 256034437 is about 634.9888910368.

The spelling of 256034437 in words is "two hundred fifty-six million, thirty-four thousand, four hundred thirty-seven".