51238361 has 2 divisors, whose sum is σ = 51238362. Its totient is φ = 51238360.

The previous prime is 51238351. The next prime is 51238379. The reversal of 51238361 is 16383215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 1394761 = 7060^2 + 1181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51238361 is a prime.

It is not a weakly prime, because it can be changed into another prime (51238301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25619180 + 25619181.

It is an arithmetic number, because the mean of its divisors is an integer number (25619181).

Almost surely, 2^51238361 is an apocalyptic number.

It is an amenable number.

51238361 is a deficient number, since it is larger than the sum of its proper divisors (1).

51238361 is an equidigital number, since it uses as much as digits as its factorization.

51238361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 51238361 is about 7158.0975824586. The cubic root of 51238361 is about 371.4198210322.

The spelling of 51238361 in words is "fifty-one million, two hundred thirty-eight thousand, three hundred sixty-one".