51551171 has 8 divisors (see below), whose sum is σ = 60816384. Its totient is φ = 42761160.

The previous prime is 51551147. The next prime is 51551173. The reversal of 51551171 is 17115515.

51551171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51551171 - 2¹⁸ = 51289027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51551171.

It is not an unprimeable number, because it can be changed into a prime (51551173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118565 + ... + 118998.

It is an arithmetic number, because the mean of its divisors is an integer number (7602048).

Almost surely, 2^51551171 is an apocalyptic number.

51551171 is a deficient number, since it is larger than the sum of its proper divisors (9265213).

51551171 is a wasteful number, since it uses less digits than its factorization.

51551171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237601.

The product of its digits is 875, while the sum is 26.

The square root of 51551171 is about 7179.9144145317. The cubic root of 51551171 is about 372.1741269640.

Adding to 51551171 its reverse (17115515), we get a palindrome (68666686).

The spelling of 51551171 in words is "fifty-one million, five hundred fifty-one thousand, one hundred seventy-one".