51217037 has 2 divisors, whose sum is σ = 51217038. Its totient is φ = 51217036.

The previous prime is 51217031. The next prime is 51217051. The reversal of 51217037 is 73071215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39513796 + 11703241 = 6286^2 + 3421^2 .

It is a cyclic number.

It is not a de Polignac number, because 51217037 - 2⁶ = 51216973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51216997 and 51217015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51217031) 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, 25608518 + 25608519.

It is an arithmetic number, because the mean of its divisors is an integer number (25608519).

Almost surely, 2^51217037 is an apocalyptic number.

It is an amenable number.

51217037 is a deficient number, since it is larger than the sum of its proper divisors (1).

51217037 is an equidigital number, since it uses as much as digits as its factorization.

51217037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 51217037 is about 7156.6079255469. The cubic root of 51217037 is about 371.3682889699.

The spelling of 51217037 in words is "fifty-one million, two hundred seventeen thousand, thirty-seven".