51166537 has 2 divisors, whose sum is σ = 51166538. Its totient is φ = 51166536.

The previous prime is 51166529. The next prime is 51166547. The reversal of 51166537 is 73566115.

51166537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41332041 + 9834496 = 6429^2 + 3136^2 .

It is a cyclic number.

It is not a de Polignac number, because 51166537 - 2³ = 51166529 is a prime.

It is not a weakly prime, because it can be changed into another prime (51166547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25583268 + 25583269.

It is an arithmetic number, because the mean of its divisors is an integer number (25583269).

Almost surely, 2^51166537 is an apocalyptic number.

It is an amenable number.

51166537 is a deficient number, since it is larger than the sum of its proper divisors (1).

51166537 is an equidigital number, since it uses as much as digits as its factorization.

51166537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 51166537 is about 7153.0788476012. The cubic root of 51166537 is about 371.2461924508.

The spelling of 51166537 in words is "fifty-one million, one hundred sixty-six thousand, five hundred thirty-seven".