51366737 has 2 divisors, whose sum is σ = 51366738. Its totient is φ = 51366736.

The previous prime is 51366713. The next prime is 51366769. The reversal of 51366737 is 73766315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36590401 + 14776336 = 6049^2 + 3844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51366737 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51366737.

It is not a weakly prime, because it can be changed into another prime (51366787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25683368 + 25683369.

It is an arithmetic number, because the mean of its divisors is an integer number (25683369).

Almost surely, 2^51366737 is an apocalyptic number.

It is an amenable number.

51366737 is a deficient number, since it is larger than the sum of its proper divisors (1).

51366737 is an equidigital number, since it uses as much as digits as its factorization.

51366737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 38.

The square root of 51366737 is about 7167.0591597949. The cubic root of 51366737 is about 371.7297556462.

The spelling of 51366737 in words is "fifty-one million, three hundred sixty-six thousand, seven hundred thirty-seven".