51700716 has 18 divisors (see below), whose sum is σ = 130688012. Its totient is φ = 17233560.

The previous prime is 51700703. The next prime is 51700741. The reversal of 51700716 is 61700715.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 51700716.

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, 718030 + ... + 718101.

Almost surely, 2^51700716 is an apocalyptic number.

It is an amenable number.

51700716 is an abundant number, since it is smaller than the sum of its proper divisors (78987296).

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

51700716 is a wasteful number, since it uses less digits than its factorization.

51700716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436141 (or 1436136 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 51700716 is about 7190.3209942255. The cubic root of 51700716 is about 372.5336600065.

Subtracting 51700716 from its reverse (61700715), we obtain a palindrome (9999999).

The spelling of 51700716 in words is "fifty-one million, seven hundred thousand, seven hundred sixteen".