51262241 has 4 divisors (see below), whose sum is σ = 51303300. Its totient is φ = 51221184.

The previous prime is 51262229. The next prime is 51262261. The reversal of 51262241 is 14226215.

It is a happy number.

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 23804641 + 27457600 = 4879^2 + 5240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51262241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51262261) 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, 18596 + ... + 21173.

It is an arithmetic number, because the mean of its divisors is an integer number (12825825).

Almost surely, 2^51262241 is an apocalyptic number.

It is an amenable number.

51262241 is a deficient number, since it is larger than the sum of its proper divisors (41059).

51262241 is a wasteful number, since it uses less digits than its factorization.

51262241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41058.

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

The square root of 51262241 is about 7159.7654291185. The cubic root of 51262241 is about 371.4775130141.

Adding to 51262241 its reverse (14226215), we get a palindrome (65488456).

The spelling of 51262241 in words is "fifty-one million, two hundred sixty-two thousand, two hundred forty-one".