51432961 has 2 divisors, whose sum is σ = 51432962. Its totient is φ = 51432960.

The previous prime is 51432917. The next prime is 51432971. The reversal of 51432961 is 16923415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29866225 + 21566736 = 5465^2 + 4644^2 .

It is a cyclic number.

It is not a de Polignac number, because 51432961 - 2¹¹ = 51430913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51432911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25716480 + 25716481.

It is an arithmetic number, because the mean of its divisors is an integer number (25716481).

Almost surely, 2^51432961 is an apocalyptic number.

It is an amenable number.

51432961 is a deficient number, since it is larger than the sum of its proper divisors (1).

51432961 is an equidigital number, since it uses as much as digits as its factorization.

51432961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 51432961 is about 7171.6776977218. The cubic root of 51432961 is about 371.8894365415.

The spelling of 51432961 in words is "fifty-one million, four hundred thirty-two thousand, nine hundred sixty-one".