1343561 has 6 divisors (see below), whose sum is σ = 1427550. Its totient is φ = 1264256.

The previous prime is 1343549. The next prime is 1343567. The reversal of 1343561 is 1653431.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 960400 + 383161 = 980^2 + 619^2 .

It is not a de Polignac number, because 1343561 - 2¹⁸ = 1081417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343567) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2036 + ... + 2613.

It is an arithmetic number, because the mean of its divisors is an integer number (237925).

2^1343561 is an apocalyptic number.

It is an amenable number.

1343561 is a deficient number, since it is larger than the sum of its proper divisors (83989).

1343561 is an equidigital number, since it uses as much as digits as its factorization.

1343561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683 (or 4666 counting only the distinct ones).

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

The square root of 1343561 is about 1159.1207874937. The cubic root of 1343561 is about 110.3449501941.

Adding to 1343561 its reverse (1653431), we get a palindrome (2996992).

The spelling of 1343561 in words is "one million, three hundred forty-three thousand, five hundred sixty-one".