1275797 has 12 divisors (see below), whose sum is σ = 1390116. Its totient is φ = 1169280.

The previous prime is 1275779. The next prime is 1275803. The reversal of 1275797 is 7975721.

It can be written as a sum of positive squares in 6 ways, for example, as 1156 + 1274641 = 34^2 + 1129^2 .

It is not a de Polignac number, because 1275797 - 2⁸ = 1275541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1275797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31097 + ... + 31137.

It is an arithmetic number, because the mean of its divisors is an integer number (115843).

2^1275797 is an apocalyptic number.

It is an amenable number.

1275797 is a deficient number, since it is larger than the sum of its proper divisors (114319).

1275797 is an equidigital number, since it uses as much as digits as its factorization.

1275797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 107 counting only the distinct ones).

The product of its digits is 30870, while the sum is 38.

The square root of 1275797 is about 1129.5118414607. The cubic root of 1275797 is about 108.4577337550.

The spelling of 1275797 in words is "one million, two hundred seventy-five thousand, seven hundred ninety-seven".