51845441 has 2 divisors, whose sum is σ = 51845442. Its totient is φ = 51845440.

The previous prime is 51845429. The next prime is 51845449. The reversal of 51845441 is 14454815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51480625 + 364816 = 7175^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 51845441 - 2¹⁸ = 51583297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51845398 and 51845407.

It is not a weakly prime, because it can be changed into another prime (51845449) 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 as a sum of consecutive naturals, namely, 25922720 + 25922721.

It is an arithmetic number, because the mean of its divisors is an integer number (25922721).

Almost surely, 2^51845441 is an apocalyptic number.

It is an amenable number.

51845441 is a deficient number, since it is larger than the sum of its proper divisors (1).

51845441 is an equidigital number, since it uses as much as digits as its factorization.

51845441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12800, while the sum is 32.

The square root of 51845441 is about 7200.3778373083. The cubic root of 51845441 is about 372.8809453600.

The spelling of 51845441 in words is "fifty-one million, eight hundred forty-five thousand, four hundred forty-one".