51317282 has 4 divisors (see below), whose sum is σ = 76975926. Its totient is φ = 25658640.

The previous prime is 51317251. The next prime is 51317291. The reversal of 51317282 is 28271315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28271315 = 5 ⋅5654263.

It can be written as a sum of positive squares in only one way, i.e., 45171841 + 6145441 = 6721^2 + 2479^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12829319 + ... + 12829322.

Almost surely, 2^51317282 is an apocalyptic number.

51317282 is a deficient number, since it is larger than the sum of its proper divisors (25658644).

51317282 is a wasteful number, since it uses less digits than its factorization.

51317282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25658643.

The product of its digits is 3360, while the sum is 29.

The square root of 51317282 is about 7163.6081690723. The cubic root of 51317282 is about 371.6104190275.

Adding to 51317282 its reverse (28271315), we get a palindrome (79588597).

The spelling of 51317282 in words is "fifty-one million, three hundred seventeen thousand, two hundred eighty-two".