51670271 has 2 divisors, whose sum is σ = 51670272. Its totient is φ = 51670270.

The previous prime is 51670261. The next prime is 51670277. The reversal of 51670271 is 17207615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51670271 - 2¹⁸ = 51408127 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51670277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25835135 + 25835136.

It is an arithmetic number, because the mean of its divisors is an integer number (25835136).

Almost surely, 2^51670271 is an apocalyptic number.

51670271 is a deficient number, since it is larger than the sum of its proper divisors (1).

51670271 is an equidigital number, since it uses as much as digits as its factorization.

51670271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 51670271 is about 7188.2036003441. The cubic root of 51670271 is about 372.4605210176.

Adding to 51670271 its reverse (17207615), we get a palindrome (68877886).

The spelling of 51670271 in words is "fifty-one million, six hundred seventy thousand, two hundred seventy-one".