51536171 has 2 divisors, whose sum is σ = 51536172. Its totient is φ = 51536170.

The previous prime is 51536143. The next prime is 51536179. The reversal of 51536171 is 17163515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51536171 is a prime.

It is not a weakly prime, because it can be changed into another prime (51536179) 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, 25768085 + 25768086.

It is an arithmetic number, because the mean of its divisors is an integer number (25768086).

Almost surely, 2^51536171 is an apocalyptic number.

51536171 is a deficient number, since it is larger than the sum of its proper divisors (1).

51536171 is an equidigital number, since it uses as much as digits as its factorization.

51536171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150, while the sum is 29.

The square root of 51536171 is about 7178.8697578379. The cubic root of 51536171 is about 372.1380259189.

Adding to 51536171 its reverse (17163515), we get a palindrome (68699686).

The spelling of 51536171 in words is "fifty-one million, five hundred thirty-six thousand, one hundred seventy-one".