51372241 has 2 divisors, whose sum is σ = 51372242. Its totient is φ = 51372240.

The previous prime is 51372227. The next prime is 51372247. The reversal of 51372241 is 14227315.

It is a happy number.

51372241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47210641 + 4161600 = 6871^2 + 2040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51372241 is a prime.

It is not a weakly prime, because it can be changed into another prime (51372247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25686120 + 25686121.

It is an arithmetic number, because the mean of its divisors is an integer number (25686121).

Almost surely, 2^51372241 is an apocalyptic number.

It is an amenable number.

51372241 is a deficient number, since it is larger than the sum of its proper divisors (1).

51372241 is an equidigital number, since it uses as much as digits as its factorization.

51372241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 51372241 is about 7167.4431284803. The cubic root of 51372241 is about 371.7430322503.

Adding to 51372241 its reverse (14227315), we get a palindrome (65599556).

The spelling of 51372241 in words is "fifty-one million, three hundred seventy-two thousand, two hundred forty-one".