51036481 has 2 divisors, whose sum is σ = 51036482. Its totient is φ = 51036480.

The previous prime is 51036467. The next prime is 51036487. The reversal of 51036481 is 18463015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32035600 + 19000881 = 5660^2 + 4359^2 .

It is a cyclic number.

It is not a de Polignac number, because 51036481 - 2⁷ = 51036353 is a prime.

It is a super-2 number, since 2×51036481² = 5209444785726722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51036487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25518240 + 25518241.

It is an arithmetic number, because the mean of its divisors is an integer number (25518241).

Almost surely, 2^51036481 is an apocalyptic number.

It is an amenable number.

51036481 is a deficient number, since it is larger than the sum of its proper divisors (1).

51036481 is an equidigital number, since it uses as much as digits as its factorization.

51036481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 51036481 is about 7143.9821528333. The cubic root of 51036481 is about 370.9313788754.

Adding to 51036481 its reverse (18463015), we get a palindrome (69499496).

The spelling of 51036481 in words is "fifty-one million, thirty-six thousand, four hundred eighty-one".