51715012 has 6 divisors (see below), whose sum is σ = 90501278. Its totient is φ = 25857504.

The previous prime is 51714997. The next prime is 51715019. The reversal of 51715012 is 21051715.

It can be written as a sum of positive squares in only one way, i.e., 34292736 + 17422276 = 5856^2 + 4174^2 .

It is not an unprimeable number, because it can be changed into a prime (51715019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6464373 + ... + 6464380.

Almost surely, 2^51715012 is an apocalyptic number.

It is an amenable number.

51715012 is a deficient number, since it is larger than the sum of its proper divisors (38786266).

51715012 is a wasteful number, since it uses less digits than its factorization.

51715012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928757 (or 12928755 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 51715012 is about 7191.3150396850. The cubic root of 51715012 is about 372.5679938340.

Adding to 51715012 its reverse (21051715), we get a palindrome (72766727).

The spelling of 51715012 in words is "fifty-one million, seven hundred fifteen thousand, twelve".