51386171 has 2 divisors, whose sum is σ = 51386172. Its totient is φ = 51386170.

The previous prime is 51386147. The next prime is 51386177. The reversal of 51386171 is 17168315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51386171 - 2⁶ = 51386107 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51386177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25693085 + 25693086.

It is an arithmetic number, because the mean of its divisors is an integer number (25693086).

Almost surely, 2^51386171 is an apocalyptic number.

51386171 is a deficient number, since it is larger than the sum of its proper divisors (1).

51386171 is an equidigital number, since it uses as much as digits as its factorization.

51386171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 32.

The square root of 51386171 is about 7168.4148177962. The cubic root of 51386171 is about 371.7766295937.

The spelling of 51386171 in words is "fifty-one million, three hundred eighty-six thousand, one hundred seventy-one".