51166637 has 2 divisors, whose sum is σ = 51166638. Its totient is φ = 51166636.

The previous prime is 51166607. The next prime is 51166657. The reversal of 51166637 is 73666115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41809156 + 9357481 = 6466^2 + 3059^2 .

It is a cyclic number.

It is not a de Polignac number, because 51166637 - 2⁶ = 51166573 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51166597 and 51166606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51166607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25583318 + 25583319.

It is an arithmetic number, because the mean of its divisors is an integer number (25583319).

Almost surely, 2^51166637 is an apocalyptic number.

It is an amenable number.

51166637 is a deficient number, since it is larger than the sum of its proper divisors (1).

51166637 is an equidigital number, since it uses as much as digits as its factorization.

51166637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 51166637 is about 7153.0858375948. The cubic root of 51166637 is about 371.2464343054.

The spelling of 51166637 in words is "fifty-one million, one hundred sixty-six thousand, six hundred thirty-seven".