1297801 has 4 divisors (see below), whose sum is σ = 1307412. Its totient is φ = 1288192.

The previous prime is 1297799. The next prime is 1297841. The reversal of 1297801 is 1087921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1087921 = 19 ⋅57259.

It can be written as a sum of positive squares in 2 ways, for example, as 1071225 + 226576 = 1035^2 + 476^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297801 - 2¹ = 1297799 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 1297801.

It is not an unprimeable number, because it can be changed into a prime (1297841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4600 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (326853).

2^1297801 is an apocalyptic number.

1297801 is the 721-st centered pentagonal number.

It is an amenable number.

1297801 is a deficient number, since it is larger than the sum of its proper divisors (9611).

1297801 is an equidigital number, since it uses as much as digits as its factorization.

1297801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9610.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1297801 is about 1139.2106916633. The cubic root of 1297801 is about 109.0777158077.

The spelling of 1297801 in words is "one million, two hundred ninety-seven thousand, eight hundred one".