1365281 has 2 divisors, whose sum is σ = 1365282. Its totient is φ = 1365280.

The previous prime is 1365269. The next prime is 1365289. The reversal of 1365281 is 1825631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 625681 = 860^2 + 791^2 .

It is an emirp because it is prime and its reverse (1825631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1365281 is a prime.

It is a super-2 number, since 2×1365281² = 3727984417922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1365281.

It is not a weakly prime, because it can be changed into another prime (1365289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682640 + 682641.

It is an arithmetic number, because the mean of its divisors is an integer number (682641).

2^1365281 is an apocalyptic number.

It is an amenable number.

1365281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365281 is an equidigital number, since it uses as much as digits as its factorization.

1365281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 26.

The square root of 1365281 is about 1168.4523952648. The cubic root of 1365281 is about 110.9363864598.

The spelling of 1365281 in words is "one million, three hundred sixty-five thousand, two hundred eighty-one".