51216708 has 36 divisors (see below), whose sum is σ = 122539760. Its totient is φ = 16649280.

The previous prime is 51216691. The next prime is 51216713. The reversal of 51216708 is 80761215.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18903 + ... + 21441.

Almost surely, 2^51216708 is an apocalyptic number.

It is an amenable number.

51216708 is an abundant number, since it is smaller than the sum of its proper divisors (71323052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51216708 is a wasteful number, since it uses less digits than its factorization.

51216708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628 (or 2585 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 51216708 is about 7156.5849397600. The cubic root of 51216708 is about 371.3674937890.

The spelling of 51216708 in words is "fifty-one million, two hundred sixteen thousand, seven hundred eight".