1273051601 has 2 divisors, whose sum is σ = 1273051602. Its totient is φ = 1273051600.

The previous prime is 1273051567. The next prime is 1273051607. The reversal of 1273051601 is 1061503721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1237350976 + 35700625 = 35176^2 + 5975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1273051601 - 2¹⁸ = 1272789457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1273051607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636525800 + 636525801.

It is an arithmetic number, because the mean of its divisors is an integer number (636525801).

Almost surely, 2^1273051601 is an apocalyptic number.

It is an amenable number.

1273051601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273051601 is an equidigital number, since it uses as much as digits as its factorization.

1273051601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1273051601 is about 35679.8486684010. The cubic root of 1273051601 is about 1083.7988082762.

The spelling of 1273051601 in words is "one billion, two hundred seventy-three million, fifty-one thousand, six hundred one".