51140171 has 2 divisors, whose sum is σ = 51140172. Its totient is φ = 51140170.

The previous prime is 51140147. The next prime is 51140203. The reversal of 51140171 is 17104115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51140171 - 2⁶ = 51140107 is a prime.

It is not a weakly prime, because it can be changed into another prime (51140101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25570085 + 25570086.

It is an arithmetic number, because the mean of its divisors is an integer number (25570086).

Almost surely, 2^51140171 is an apocalyptic number.

51140171 is a deficient number, since it is larger than the sum of its proper divisors (1).

51140171 is an equidigital number, since it uses as much as digits as its factorization.

51140171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 51140171 is about 7151.2356274982. The cubic root of 51140171 is about 371.1824140554.

Adding to 51140171 its reverse (17104115), we get a palindrome (68244286).

The spelling of 51140171 in words is "fifty-one million, one hundred forty thousand, one hundred seventy-one".