51016171 has 4 divisors (see below), whose sum is σ = 51064192. Its totient is φ = 50968152.

The previous prime is 51016169. The next prime is 51016193. The reversal of 51016171 is 17161015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17161015 = 5 ⋅3432203.

It is a cyclic number.

It is not a de Polignac number, because 51016171 - 2¹ = 51016169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51016151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22380 + ... + 24553.

It is an arithmetic number, because the mean of its divisors is an integer number (12766048).

Almost surely, 2^51016171 is an apocalyptic number.

51016171 is a deficient number, since it is larger than the sum of its proper divisors (48021).

51016171 is a wasteful number, since it uses less digits than its factorization.

51016171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48020.

The product of its (nonzero) digits is 210, while the sum is 22.

The square root of 51016171 is about 7142.5605352702. The cubic root of 51016171 is about 370.8821682211.

Adding to 51016171 its reverse (17161015), we get a palindrome (68177186).

The spelling of 51016171 in words is "fifty-one million, sixteen thousand, one hundred seventy-one".