256790953 has 2 divisors, whose sum is σ = 256790954. Its totient is φ = 256790952.

The previous prime is 256790923. The next prime is 256790971. The reversal of 256790953 is 359097652.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213072409 + 43718544 = 14597^2 + 6612^2 .

It is a cyclic number.

It is not a de Polignac number, because 256790953 - 2⁹ = 256790441 is a prime.

It is not a weakly prime, because it can be changed into another prime (256790903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128395476 + 128395477.

It is an arithmetic number, because the mean of its divisors is an integer number (128395477).

Almost surely, 2^256790953 is an apocalyptic number.

It is an amenable number.

256790953 is a deficient number, since it is larger than the sum of its proper divisors (1).

256790953 is an equidigital number, since it uses as much as digits as its factorization.

256790953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 46.

The square root of 256790953 is about 16024.6982186873. The cubic root of 256790953 is about 635.6136857639.

The spelling of 256790953 in words is "two hundred fifty-six million, seven hundred ninety thousand, nine hundred fifty-three".