51152171 has 16 divisors (see below), whose sum is σ = 59449344. Its totient is φ = 43110144.

The previous prime is 51152159. The next prime is 51152173. The reversal of 51152171 is 17125115.

It is not a de Polignac number, because 51152171 - 2⁶ = 51152107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51152173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144731 + ... + 145083.

It is an arithmetic number, because the mean of its divisors is an integer number (3715584).

Almost surely, 2^51152171 is an apocalyptic number.

51152171 is a deficient number, since it is larger than the sum of its proper divisors (8297173).

51152171 is a wasteful number, since it uses less digits than its factorization.

51152171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its digits is 350, while the sum is 23.

The square root of 51152171 is about 7152.0745941300. The cubic root of 51152171 is about 371.2114443365.

Adding to 51152171 its reverse (17125115), we get a palindrome (68277286).

The spelling of 51152171 in words is "fifty-one million, one hundred fifty-two thousand, one hundred seventy-one".