1273297655 has 16 divisors (see below), whose sum is σ = 1752420864. Its totient is φ = 870026400.

The previous prime is 1273297651. The next prime is 1273297657. The reversal of 1273297655 is 5567923721.

It is not a de Polignac number, because 1273297655 - 2² = 1273297651 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273297651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54371 + ... + 74180.

It is an arithmetic number, because the mean of its divisors is an integer number (109526304).

Almost surely, 2^1273297655 is an apocalyptic number.

1273297655 is a deficient number, since it is larger than the sum of its proper divisors (479123209).

1273297655 is a wasteful number, since it uses less digits than its factorization.

1273297655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128846.

The product of its digits is 793800, while the sum is 47.

The square root of 1273297655 is about 35683.2965825749. The cubic root of 1273297655 is about 1083.8686289215.

The spelling of 1273297655 in words is "one billion, two hundred seventy-three million, two hundred ninety-seven thousand, six hundred fifty-five".