256551067 has 2 divisors, whose sum is σ = 256551068. Its totient is φ = 256551066.

The previous prime is 256551059. The next prime is 256551073. The reversal of 256551067 is 760155652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256551067 - 2³ = 256551059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256551017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128275533 + 128275534.

It is an arithmetic number, because the mean of its divisors is an integer number (128275534).

Almost surely, 2^256551067 is an apocalyptic number.

256551067 is a deficient number, since it is larger than the sum of its proper divisors (1).

256551067 is an equidigital number, since it uses as much as digits as its factorization.

256551067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 256551067 is about 16017.2115862905. The cubic root of 256551067 is about 635.4157006888.

The spelling of 256551067 in words is "two hundred fifty-six million, five hundred fifty-one thousand, sixty-seven".