1361345 has 4 divisors (see below), whose sum is σ = 1633620. Its totient is φ = 1089072.

The previous prime is 1361317. The next prime is 1361357. The reversal of 1361345 is 5431631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5431631 = 43 ⋅126317.

It can be written as a sum of positive squares in 2 ways, for example, as 179776 + 1181569 = 424^2 + 1087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361345 - 2⁸ = 1361089 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1361345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136130 + ... + 136139.

It is an arithmetic number, because the mean of its divisors is an integer number (408405).

2^1361345 is an apocalyptic number.

It is an amenable number.

1361345 is a deficient number, since it is larger than the sum of its proper divisors (272275).

1361345 is an equidigital number, since it uses as much as digits as its factorization.

1361345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272274.

The product of its digits is 1080, while the sum is 23.

The square root of 1361345 is about 1166.7669004561. The cubic root of 1361345 is about 110.8296768286.

Adding to 1361345 its reverse (5431631), we get a palindrome (6792976).

The spelling of 1361345 in words is "one million, three hundred sixty-one thousand, three hundred forty-five".