51850171 has 2 divisors, whose sum is σ = 51850172. Its totient is φ = 51850170.

The previous prime is 51850121. The next prime is 51850177. The reversal of 51850171 is 17105815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51850171 - 2¹¹ = 51848123 is a prime.

It is not a weakly prime, because it can be changed into another prime (51850177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25925085 + 25925086.

It is an arithmetic number, because the mean of its divisors is an integer number (25925086).

Almost surely, 2^51850171 is an apocalyptic number.

51850171 is a deficient number, since it is larger than the sum of its proper divisors (1).

51850171 is an equidigital number, since it uses as much as digits as its factorization.

51850171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 51850171 is about 7200.7062848029. The cubic root of 51850171 is about 372.8922846613.

Adding to 51850171 its reverse (17105815), we get a palindrome (68955986).

The spelling of 51850171 in words is "fifty-one million, eight hundred fifty thousand, one hundred seventy-one".