51712616 has 24 divisors (see below), whose sum is σ = 98388630. Its totient is φ = 25481088.

The previous prime is 51712601. The next prime is 51712627. The reversal of 51712616 is 61621715.

It can be written as a sum of positive squares in 3 ways, for example, as 34456900 + 17255716 = 5870^2 + 4154^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42026 + ... + 43238.

Almost surely, 2^51712616 is an apocalyptic number.

It is an amenable number.

51712616 is a deficient number, since it is larger than the sum of its proper divisors (46676014).

51712616 is a wasteful number, since it uses less digits than its factorization.

51712616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1288 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 51712616 is about 7191.1484479185. The cubic root of 51712616 is about 372.5622399490.

Subtracting 51712616 from its reverse (61621715), we obtain a palindrome (9909099).

The spelling of 51712616 in words is "fifty-one million, seven hundred twelve thousand, six hundred sixteen".