51444241 has 4 divisors (see below), whose sum is σ = 51974692. Its totient is φ = 50913792.

The previous prime is 51444223. The next prime is 51444269. The reversal of 51444241 is 14244415.

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 33593616 + 17850625 = 5796^2 + 4225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51444241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51441241) 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, 265080 + ... + 265273.

It is an arithmetic number, because the mean of its divisors is an integer number (12993673).

Almost surely, 2^51444241 is an apocalyptic number.

It is an amenable number.

51444241 is a deficient number, since it is larger than the sum of its proper divisors (530451).

51444241 is an equidigital number, since it uses as much as digits as its factorization.

51444241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530450.

The product of its digits is 2560, while the sum is 25.

The square root of 51444241 is about 7172.4640814716. The cubic root of 51444241 is about 371.9166214836.

Adding to 51444241 its reverse (14244415), we get a palindrome (65688656).

The spelling of 51444241 in words is "fifty-one million, four hundred forty-four thousand, two hundred forty-one".