256910053 has 2 divisors, whose sum is σ = 256910054. Its totient is φ = 256910052.

The previous prime is 256910009. The next prime is 256910081. The reversal of 256910053 is 350019652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223293249 + 33616804 = 14943^2 + 5798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256910053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256909997 and 256910024.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256910083) 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, 128455026 + 128455027.

It is an arithmetic number, because the mean of its divisors is an integer number (128455027).

Almost surely, 2^256910053 is an apocalyptic number.

It is an amenable number.

256910053 is a deficient number, since it is larger than the sum of its proper divisors (1).

256910053 is an equidigital number, since it uses as much as digits as its factorization.

256910053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 256910053 is about 16028.4139265244. The cubic root of 256910053 is about 635.7119367453.

The spelling of 256910053 in words is "two hundred fifty-six million, nine hundred ten thousand, fifty-three".