51871172 has 24 divisors (see below), whose sum is σ = 92463000. Its totient is φ = 25456896.

The previous prime is 51871133. The next prime is 51871177. The reversal of 51871172 is 27117815.

It can be written as a sum of positive squares in 4 ways, for example, as 22429696 + 29441476 = 4736^2 + 5426^2 .

It is not an unprimeable number, because it can be changed into a prime (51871177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101654 + ... + 102162.

It is an arithmetic number, because the mean of its divisors is an integer number (3852625).

Almost surely, 2^51871172 is an apocalyptic number.

It is an amenable number.

51871172 is a deficient number, since it is larger than the sum of its proper divisors (40591828).

51871172 is a wasteful number, since it uses less digits than its factorization.

51871172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 933 counting only the distinct ones).

The product of its digits is 3920, while the sum is 32.

The square root of 51871172 is about 7202.1643969018. The cubic root of 51871172 is about 372.9426223534.

Adding to 51871172 its reverse (27117815), we get a palindrome (78988987).

The spelling of 51871172 in words is "fifty-one million, eight hundred seventy-one thousand, one hundred seventy-two".