51315171 has 16 divisors (see below), whose sum is σ = 69588480. Its totient is φ = 33631200.

The previous prime is 51315157. The next prime is 51315203. The reversal of 51315171 is 17151315.

It is not a de Polignac number, because 51315171 - 2⁶ = 51315107 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (51315871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48870 + ... + 49908.

It is an arithmetic number, because the mean of its divisors is an integer number (4349280).

Almost surely, 2^51315171 is an apocalyptic number.

51315171 is a deficient number, since it is larger than the sum of its proper divisors (18273309).

51315171 is a wasteful number, since it uses less digits than its factorization.

51315171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306.

The product of its digits is 525, while the sum is 24.

The square root of 51315171 is about 7163.4608256066. The cubic root of 51315171 is about 371.6053234059.

Adding to 51315171 its reverse (17151315), we get a palindrome (68466486).

The spelling of 51315171 in words is "fifty-one million, three hundred fifteen thousand, one hundred seventy-one".