51271173 has 12 divisors (see below), whose sum is σ = 74625408. Its totient is φ = 33919080.

The previous prime is 51271169. The next prime is 51271183. The reversal of 51271173 is 37117215.

It is a happy number.

It is not a de Polignac number, because 51271173 - 2² = 51271169 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51271153) 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 11 ways as a sum of consecutive naturals, for example, 20565 + ... + 22922.

It is an arithmetic number, because the mean of its divisors is an integer number (6218784).

Almost surely, 2^51271173 is an apocalyptic number.

It is an amenable number.

51271173 is a deficient number, since it is larger than the sum of its proper divisors (23354235).

51271173 is a wasteful number, since it uses less digits than its factorization.

51271173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43624 (or 43621 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 51271173 is about 7160.3891654016. The cubic root of 51271173 is about 371.4990873372.

Adding to 51271173 its reverse (37117215), we get a palindrome (88388388).

The spelling of 51271173 in words is "fifty-one million, two hundred seventy-one thousand, one hundred seventy-three".