256049077 has 2 divisors, whose sum is σ = 256049078. Its totient is φ = 256049076.

The previous prime is 256049071. The next prime is 256049089. The reversal of 256049077 is 770940652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171243396 + 84805681 = 13086^2 + 9209^2 .

It is a cyclic number.

It is not a de Polignac number, because 256049077 - 2¹⁵ = 256016309 is a prime.

It is a super-2 number, since 2×256049077² = 131122259665103858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256049071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128024538 + 128024539.

It is an arithmetic number, because the mean of its divisors is an integer number (128024539).

Almost surely, 2^256049077 is an apocalyptic number.

It is an amenable number.

256049077 is a deficient number, since it is larger than the sum of its proper divisors (1).

256049077 is an equidigital number, since it uses as much as digits as its factorization.

256049077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 256049077 is about 16001.5335827539. The cubic root of 256049077 is about 635.0009936538. Note that the first 3 decimals are identical.

The spelling of 256049077 in words is "two hundred fifty-six million, forty-nine thousand, seventy-seven".