1244561 has 4 divisors (see below), whose sum is σ = 1249332. Its totient is φ = 1239792.

The previous prime is 1244543. The next prime is 1244567. The reversal of 1244561 is 1654421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 846400 + 398161 = 920^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244561 - 2¹⁰ = 1243537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1970 + ... + 2523.

It is an arithmetic number, because the mean of its divisors is an integer number (312333).

2^1244561 is an apocalyptic number.

It is an amenable number.

1244561 is a deficient number, since it is larger than the sum of its proper divisors (4771).

1244561 is an equidigital number, since it uses as much as digits as its factorization.

1244561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770.

The product of its digits is 960, while the sum is 23.

The square root of 1244561 is about 1115.5989422727. The cubic root of 1244561 is about 107.5652677386.

Adding to 1244561 its reverse (1654421), we get a palindrome (2898982).

The spelling of 1244561 in words is "one million, two hundred forty-four thousand, five hundred sixty-one".