1276053617 has 2 divisors, whose sum is σ = 1276053618. Its totient is φ = 1276053616.

The previous prime is 1276053607. The next prime is 1276053671. The reversal of 1276053617 is 7163506721.

Together with next prime (1276053671) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 807071281 + 468982336 = 28409^2 + 21656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1276053617 - 2⁴ = 1276053601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1276053607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638026808 + 638026809.

It is an arithmetic number, because the mean of its divisors is an integer number (638026809).

Almost surely, 2^1276053617 is an apocalyptic number.

It is an amenable number.

1276053617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276053617 is an equidigital number, since it uses as much as digits as its factorization.

1276053617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 1276053617 is about 35721.8926850188. The cubic root of 1276053617 is about 1084.6500508742.

The spelling of 1276053617 in words is "one billion, two hundred seventy-six million, fifty-three thousand, six hundred seventeen".